Wednesday

March 4, 2015

March 4, 2015

Number of results: 31,584

**physics**

A car slows down from 40 km/hr to rest in a distance of 72 m. What was its acceleration
*October 10, 2012 by terrell*

**Physics**

A car accelerates from rest to 90km/h in 10 seconds.What is its acceleration in m/s2?
*November 23, 2014 by Fofo*

**Physics**

A car starts from rest and accelerates at a constant rate of 1.1 m/s2. If the radius of the car wheels is 29 cm, and the final angular speed of the car wheel is 48 rad/s, how far does the car travel
*October 18, 2010 by Sufian Syed*

**Physics**

A 46.5-cm diameter disk rotates with a constant angular acceleration of 2.4 rad/s2. It starts from rest at t = 0, and a line drawn from the center of the disk to a point P on the rim of the disk makes an angle of 57.3° with the positive x-axis at this time. (Hint: Remember the...
*November 30, 2009 by Ed*

**College Physics**

A uniform rod of mass M = 437.0 g and length L = 37.1 cm stands vertically on a horizontal table. It is released from rest to fall. A)Which of the following forces are acting on the rod? B)Calculate the angular speed of the rod as it makes an angle θ = 45° with respect to...
*November 3, 2013 by Kimmy*

**Physic Check**

These are questions I'm unsure about out of 20 for my submission #2. Someone please check soon. My answers have an =. 1.)A ball is rolling across the top of a billiard table and slowly rolls to a stop. How would Galileo explain the motion of the ball as it stopped? a)The ball'...
*July 12, 2010 by Ariel*

**physics**

A person is riding a bicycle, the wheels of a bicycle have an angular velocity of +20.5 rad/s. Then, the brakes are applied. In coming to rest, each wheel makes an angular displacement of +12.0 revolutions. (a) How much time does it take for the bike to come to rest? (b) What ...
*November 10, 2010 by sean*

**physics**

A person is riding a bicycle, the wheels of a bicycle have an angular velocity of +24.0 rad/s. Then, the brakes are applied. In coming to rest, each wheel makes an angular displacement of +16.0 revolutions. (a) How much time does it take for the bike to come to rest? s (b) ...
*November 17, 2011 by Taylor*

**physics**

Lauren was driving north on Hwy 75 with a speed of 46.7 m/s when she heard on a CB that a patrolman was hiding 112.7 m north of where she is. Knowing that the patrolman can start clocking the car in 2.9 seconds, Lauren decided to slow to 27.5 m/s. and immediately pressed on ...
*September 2, 2011 by Jeon*

**physics**

A dragster and driver together have mass 918.8 kg. The dragster,starting from rest,attains a speed of 25.8 m/s in .53s . Find the average acceleration of the dragsters during this time interval. Answer in units of m/s^2. What is the size of the average force on the dragster ...
*July 2, 2011 by alexa*

**Physics **

A motorist traveling at 30 m/s passes a parked police car. At the instant the motorist passes the police car, the police car starts chasing the motorist with an acceleration of 3 m/s^2. How far does the police car have to travel to catch the motorist?
*February 5, 2012 by Krystal*

**Physics**

Two stunt drivers drive directly toward each other. At time t=0 the two cars are a distance D apart, car 1 is at rest, and car 2 is moving to the left with speed v_0. Car 1 begins to move at t=0, speeding up with a constant acceleration a_x. Car 2 continues to move with a ...
*May 26, 2009 by RJ*

**Physics**

Three uniform spheres are located at the corners of an equilateral triangle. Each side of the triangle has a length of 2.40 m. Two of the spheres have a mass of 3.40 kg each. The third sphere (mass unknown) is released from rest. Considering only the gravitational forces that ...
*November 6, 2014 by Kathy*

**physics**

a bus starts from rest and achieves a velocity of 20m/s in 10s while moving westwards.calculate its avarage acceleration
*March 23, 2014 by Anonymous*

**physics**

the velocity acquired by a body moving with uniform acceleration is 12 m/s2 in 2 secs.and 18 m/s2 in 4 sec. find the initial velocity of the body?
*October 7, 2012 by vinay*

**Phsyics**

An 865 kg (1912 lb) dragster, starting from rest, attains a speed of 26.7 m/s (59.8 mph) in 0.59 s. (a) Find the average acceleration of the dragster during this time interval. m/s2 (b) What is the magnitude of the average net force on the dragster during this time? N (c) ...
*October 3, 2007 by Lee Kite*

**Physics**

A 46.5-cm diameter disk rotates with a constant angular acceleration of 2.4 rad/s2. It starts from rest at t = 0, and a line drawn from the center of the disk to a point P on the rim of the disk makes an angle of 57.3° with the positive x-axis at this time. (Hint: Remember the...
*November 28, 2009 by Ed*

**physics**

The velocity acquired by a body moving with uniform acceleration is 12m/sin 2 s and 18m/s in 4s. Find the initial velocity of the body?
*August 11, 2011 by Sahil*

**physics**

Search: A person is riding a bicycle, the wheels of a bicycle have an angular velocity of +18.0 rad/s. Then, the brakes are applied. In coming to rest, each wheel makes an angular displacement of +11.0 revolutions. How much time does it take for the bike to come to rest? What ...
*February 25, 2011 by Taylor*

**Physics**

A train travels between stations 1 and 2. The engineer of the train is instructed to start from rest at station 1 and accelerate uniformly between points A and B, then coast with a uniform velocity between points B and C, and finally accelerate uniformly between points C and D...
*September 17, 2006 by Please help this time?? Becca*

**Physics**

A car is towing a boat on a trailer. The driver starts from rest and accelerates to a velocity of +14 m/s in a time of 25 s. The combined mass of the boat and trailer is 401 kg. The frictional force acting on the trailer can be ignored. What is the tension in the hitch that ...
*September 26, 2012 by Justin*

**Physics**

The distance time graph shows a cart moving at a straight path. a. Describe the speed of the cart between: 1.) A and B - The cart is moving with constant speed for 10 seconds and it is now at rest for 20 seconds. 2.) B and C - The cart at rest for 20 seconds will now start ...
*February 5, 2013 by RR*

**General Physics 1**

1) A car moving with an initial velocity of 29.6 m/s decreases to a velocity of 17.9 m/s over a time interval of 4.08 seconds. (a.) What is the average acceleration of the car during this time? (b.) Assuming the acceleration is constant, how far did the car travel during this ...
*June 16, 2014 by Kyle*

**Physics (Circular Motion!!)**

Astronauts use a centrifuge to simulate the acceleration of a rocket launch. The centrifuge takes 30.0 s to speed up from rest to its top speed of 1 rotation every 1.10 s. the astronaut is strapped into a seat 7.40 m from the axis. A) What is the astronaut's tangential ...
*September 2, 2010 by George*

**Physics**

Astronauts use a centrifuge to simulate the acceleration of a rocket launch. The centrifuge takes 40.0s to speed up from rest to its top speed of 1 rotation every 1.40s . The astronaut is strapped into a seat 4.50m from the axis. What is the astronaut's tangential acceleration...
*February 7, 2011 by Fred*

**physics **

A ranger in a national park is driving along at 17.9 m/s when a deer jumps into the road 65. m ahead of the vehicle. After a reaction time of t seconds, the ranger applies her brakes, which produce an acceleration of -2.8 m/s2. What is the maximum reaction time she can have if...
*August 21, 2012 by tyler*

**physics**

A soild wheel initially rotating at 50.0 rad/s comes to a uniform stop after 8.00 rotations. Calculate the tangential accleration at the rim. Given that the angular acceleration is -24.9 rad/s^2. I know its aT = r alpha but how do I get the radius?
*November 8, 2008 by Rod*

**Physics**

A 400 kg solid metal disk (with uniform density) has several forces applied to it, as shown. If the rotation axis is through the center of the disk, then what is the angular acceleration of the disk?
*April 17, 2012 by Anonymous*

**Physics**

The cheetah can reach a top speed of 114 km/h (71 mi/h). While chasing its prey in a short sprint, a cheetah starts from rest and runs 46 m in a straight line, reaching a final speed of 83 km/h. (a) Determine the cheetah's average acceleration during the short sprint. (b) Find...
*September 14, 2012 by Claire*

**Physics**

A girl starts from rest and reaches a walking speed of 1.4 m/s in 3.0 s. She walks at this speed for 6.0 s. Girl then slows down and comes to a stop during a 10.0 -s period. What was her acceleration during each of the 3 time periods? Her acdeleration entire trip!? Ok so i ...
*March 25, 2013 by Ariel*

**PHYSICS**

Can a car move around a racetrack so that it has tangential acceleration byt no centripetal acceleration?
*January 24, 2010 by hailey*

**calculus 2**

If a car goes from 0 to 100 mph in six seconds with constant acceleration, what is that acceleration?
*January 31, 2013 by Rachel*

**Physics**

If a car accelerates from rest to 15 m/s for a distance of 200 m. What is the magnitude of acceleration?
*June 25, 2012 by Lollie*

**physics**

A sports car accelerates from rest to 86km/h\, km/h in 5.2s\, s . What is its average acceleration in m/s2{\rm{m/s}}^2.
*September 9, 2014 by Anonymous*

**physics**

If a particle were to move from position A to position b in 0.5s, what would be its rotational (angular) velocity? If the motion is uniform (constant speed), what would be its magnitude of the acceleration?
*February 12, 2012 by Anonymous*

**physics**

A string is wrapped around a uniform solid cylinder of radius r. The cylinder can rotate freely about its axis. The loose end of the string is attached to a block. The block and cylinder each have mass m. Note that the positive y direction is downward and counterclockwise ...
*January 22, 2010 by Gabe*

**physics**

A car tavels a distance of 100 m with a constant acceleration and average velocity of 20 m per second .The final velocity acquire D by the car is 25m per second .find the initial velocity and acceleration of car
*July 2, 2013 by spoorthi.p*

**Physics**

At the instant the traffic light turns green, a car that has been waiting at an intersection starts ahead with a constant acceleration of 2.85m/s^2. At the same instant a truck, traveling with a constant speed of 19.0m/s, overtakes and passes the car. A) How far beyond its ...
*July 9, 2011 by Arthur*

**physics**

The driver of a car is initially moving at a constant speed of 76.0 km/h when a traffic light turns red. If a 0.455 s reaction time is required before the brakes can be applied, what is the distance in meters traveled by the car before it begins to slow down?
*September 13, 2011 by Nour *

**physics**

The driver of a car is initially moving at a constant speed of 71.8 km/h when a traffic light turns red. If a 0.550 s reaction time is required before the brakes can be applied, what is the distance in meters traveled by the car before it begins to slow down?
*September 10, 2012 by Anonymous*

**physics**

a car of mass 12,000 kjg is moving at 40m/s along a strong road. The driver brakes and the car goes 800 meters before stopping. What was the magnitude of the average force of friction (inN) between tires and road?
*December 13, 2012 by Nukhba*

**Physics**

Note: The left-hand mass is equal to the sum of the other two masses. A massless pulley is attached to the ceiling,in a uniform gravitational field, and rotates with no friction about its pivot. Another massless pulley is attached to the end of the cord on the right and ...
*October 1, 2013 by DW*

**physics**

A sports car of mass 950kg (including the driver) crosses the rounded top of a hill (radius = 95m) at 22m/s. Determine a) the normal force exerted by the road on the car, b) the normal force exerted by the car on the 72kg driver, and c) the car speed at which the normal force ...
*November 3, 2009 by Sasha*

**physics**

A car moving at 35 mi/h is stopped by jamming on the brakes and locking the wheels. The car skids 53 ft before coming to rest. How far would the car skid if it were initially moving at 56 mi/h?
*August 1, 2011 by Ashley*

**physics**

an automobile travels at a uniform speed of 88 kph. how many metres does it travel in 1 second?
*July 27, 2013 by leyfushie*

**physics **

a 2500kg car is rounding a circular turn of radius 200m at constant speed. the magnitude of its acceleration is 2m/s2.what is the speed of the car? how much is the centripetal force?how much is the centrifugal acceleration?
*August 1, 2013 by nuche Nina cajes *

**physics **

a 2500kg car is rounding a circular turn of radius 200m at constant speed. the magnitude of its acceleration is 2m/s2.what is the speed of the car? how much is the centripetal force?how much is the centrifugal acceleration?
*August 1, 2013 by nuche Nina cajes *

**physics**

Rocket-powered sleds are used to test the responses of humans to acceleration. Starting from rest, one sled can reach a speed of 444 m/s in 1.80 s and can be brought to a stop again in 2.15 s. (b) Find the acceleration of the sled as it is braking and compare it to the ...
*November 26, 2010 by javane*

**physics**

A 3.03 kg briefcase is sitting at rest on a level ﬂoor. The acceleration of gravity is 9.81 m/s 2 . a) What is its acceleration?
*November 23, 2011 by Anonymous*

**physics**

n object is dropped from rest. What is the acceleration after 6 s? The acceleration of gravity is 9.8 m/s 2 . Answer in units of m/
*October 20, 2013 by alyssa*

**Physics**

A car starts rolling down a l-in-4 hill (l-in-4 means that for each 4 m traveled along the road, the elevation change is 1 m). How fast is it going when it reaches the bottom after traveling 55 m? (a) Ignore friction, (b) Assume an effective coefficient of friction equal to 0....
*November 3, 2013 by Jill*

**physics**

A uniform disk with a mass of 27.3 kg and a radius of 0.309 m is free to rotate about a frictionless axle. Forces of 90.0 N and 125 N are applied to the disk, as the drawing indicates. (b) What is the angular acceleration of the disk?
*November 3, 2011 by Sami*

**physics**

A long hollow non-conducting cylinder of radius 0.060 m and length 0.70 m carries a uniform charge per unit area of 4.0 C/m^2 on its surface. Beginning from rest, an externally applied torque causes the cylinder to rotate at constant acceleration of 40 rad/s^2 about the ...
*May 14, 2012 by Rams*

**physics**

A long hollow non-conducting cylinder of radius 0.060 m and length 0.70 m carries a uniform charge per unit area of 4.0 C/m^2 on its surface. Beginning from rest, an externally applied torque causes the cylinder to rotate at constant acceleration of 40 rad/s^2 about the ...
*May 20, 2012 by sand*

**physics**

A solid disk of radius 0.20 m and a mass of 1.0 kg starts at rest and then speeds up to 100 rad/s in 10s. What is the torque that produces this rotational acceleration?
*November 6, 2012 by theresa gibson*

**physics**

A solid disk of radius 0.20 m and a mass of 1.0 kg starts at rest and then speeds up to 100 rad/s in 10s. What is the torque that produces this rotational acceleration?
*November 6, 2012 by theresa gibson*

**Physics**

A car is travelling on a highway Can it have a negative velocity & a positive acceleration at the same time? Can the car change d direction of its velocity when travelling with constant acceleration?
*October 6, 2011 by -Untamed-*

**physics**

1.A 910 kg racecar starts from rest and reaches a speed of 25.1 m/s in 0.48 s. a)What is the average acceleration of the racecar during this time period? b)What is the magnitude of the net force on the racecar? for a) I know: Mass= 910kg V=25.1m/s T=0.48s and I know to find A...
*February 19, 2015 by Natasha*

**physics**

A 2.9 × 103 kg car accelerates from rest at the top of a driveway that is sloped at an angle of 16.0 with the horizontal. An average frictional force of 4.2×103 N impedes the car’s motion so that the car’s speed at the bottom of the driveway is 4.6 m/s. The acceleration of ...
*November 29, 2011 by Matt*

**Physics**

A uniform 5.32 kg solid sphere of radius 0.344 m that is free to roll on a horizontal surface has a light axle passing through its diameter as shown. The axle is connected to a like yoke and in turn a light rope as shown. A constant tension of 7.81 N is applied ot the rope and...
*November 14, 2012 by Alphonse*

**physics**

A hard drive on a modern computer spins at 10000 rpm (revolutions per minute). If the driver is designed to start from rest and reach operating speed in 1.4 s, what is the angular acceleration of the disk?
*January 10, 2013 by Anonymous*

**physics**

Is it possible for a car to move in a circular path in such a way that it has a tangential acceleration but no centripetal acceleration?
*October 9, 2009 by shawn*

**Acceleration**

A toy car moves down an incline with an acceleration of 20 cm/s/s. what will its velocity be in 5 sec? what distance will it have traveled..?
*January 21, 2013 by Matt*

**phisecs**

In a collision, an automobile of mass 826 kg stops with constant acceleration in 20 m from an initial speed of 17 m/s. What is the acceleration of the car in m/s
*March 31, 2014 by eee*

**physics**

The cheetah can reach a top speed of 114km/h (71mi/h). While chasing its prey in a short sprint, a cheetah starts from rest and runs 50m in a straight line reaching a final speed of 91 km/h. a.) Determine the cheetah's average acceleration during the short sprint. b.) Find it'...
*February 3, 2013 by george*

**physics**

A car is stopped at a traffic light. It then travels along a straight road so that its distance from the light is given by x(t) = bt2 – ct3, where b = 2.40m/s2 and c = 0.120m/s3. (a) Calculate the average velocity of the car for the time interval t = 0 to t = 10.0 s. (b) ...
*October 12, 2010 by Anonymous*

**physics **

Plot a speed-time graph of a car A traveling at a uniform speed of 80km/hr on the same graph plot the speed-time graph of 2nd car B starting from rest and uniformly accelarating through a maximum speed of 80km/hr a) what relations do you find between the distance covered by ...
*August 17, 2014 by Anonymous*

**algebra**

Two drivers travel 150 miles on a freeway and then stop at a wayside rest area. The first driver travels 5 miles per hour faster and arrives 1/7 hour ahead of the second. Find the average speed of each car.
*August 17, 2011 by mich*

**physics**

A car is moving down a street at 51 km/h. A child suddenly runs into the street. If it takes the driver 0.97 s to react and apply the brakes, how many meters will the car have moved before it begins to slow down?
*October 3, 2010 by mike*

**physics**

A car is moving down a street at 51 km/h. A child suddenly runs into the street. If it takes the driver 0.62 s to react and apply the brakes, how many meters will the car have moved before it begins to slow down?
*October 23, 2012 by miranda*

**Physics**

A car is moving down a street at 67 km/h. A child suddenly runs into the street. If it takes the driver 1.26 s to react and apply the brakes, how many meters will the car have moved before it begins to slow down?
*February 6, 2014 by Jake*

**physics**

A 3.1 × 103 kg car accelerates from rest at the top of a driveway that is sloped at an angle of 19.5◦ with the horizontal. An average frictional force of 4.4×103 N impedes the car’s motion so that the car’s speed at the bottom of the driveway is 4.9 m/s. The acceleration...
*October 17, 2013 by Anonymous*

**Physics**

A 4.0 × 103 kg car accelerates from rest at the top of a driveway that is sloped at an angle of 19.6◦ with the horizontal. An average frictional force of 4.0×103 N impedes the car’s motion so that the car’s speed at the bottom of the driveway is 4.9 m/s. The acceleration...
*December 6, 2013 by Artemis*

**physics**

a) calculate the acceleration of a 0.55-m-diameter car tire while the car is traveling at a constant speed of 25m/sec. b) compare this with acceleration experienced by a jet car tire of diameter 1.0m when setting a land speed record of 310m/sec
*September 26, 2011 by lucy *

**physics**

A van traveling down a slope with a uniform acceleration of 2.15 meters/second2 attains a speed of 20.00 meters/second after 7.00 seconds. What is the initial velocity of the van?
*June 22, 2012 by Anonymous*

**physics**

A van traveling down a slope with a uniform acceleration of 2.15 meters/second2 attains a speed of 20.00 meters/second after 7.00 seconds. What is the initial velocity of the van?
*July 9, 2012 by jasmine*

**mechanics**

A uniform solid sphere rolls down an incline. What must be the incline angle (deg) if the linear acceleration of the center of the sphere is to have a magnitude of 0.16g?
*November 19, 2012 by JV*

**physics**

A van traveling down a slope with a uniform acceleration of 2.15 meters/second2 attains a speed of 20.00 meters/second after 7.00 seconds. What is the initial velocity of the van?
*December 18, 2012 by jason*

**physics**

"By means of a rope, whose mass is negligible, two blocks (mass: 11kg and 44 kg) are suspended over a pulley. The pulley can be treated as a uniform solid cylindrical disk. The downward acceleration of the 44 kg block is observed to be exactly one half the acceleration due to...
*April 1, 2011 by Seth *

**physics**

"By means of a rope, whose mass is negligible, two blocks (mass: 11kg and 44 kg) are suspended over a pulley. The pulley can be treated as a uniform solid cylindrical disk. The downward acceleration of the 44 kg block is observed to be exactly one half the acceleration due to ...
*April 3, 2011 by Seth *

**engineering mechanics**

A police officer observes a motorist who is approaching at a uniform speed of 80km/h he in his patrol car starts chasing it as it just crosses him.after accelerating for 8 seconds at a constant rate he attains his top speed of 120km/h how long does it take to overtake the ...
*May 29, 2014 by thayub*

**physics**

A driver in a car traveling at a speed of 60 mi/h sees a deer 100 m away on the road. Calculate the minimum constant acceleration that is necessary for the car to stop without hitting the deer (assuming that the deer does no move in the meantime). Work (so far): 100 m x 1 km/...
*September 6, 2007 by Anonymous*

**Physics**

Car A is moving at a constant speed of 10.0 m/s and passes Car B which is at rest. 10seconds after, the latter follows with an acceleration of 0.5 m/s^2. Determine the distance that the latter has to travel before it overtakes the former.
*August 11, 2012 by Cindy*

**Physics**

the car has wheels of radius 0.3 m and is travelling at a speed of 36 m/s in a straight line and the wheel now describes 40 revolution while the car is brought to rest; calculate the wheels angular acceleration.
*May 30, 2013 by Circular motion*

**AP Physics**

A car slows down from 18 m/s to rest in a distance of 91 m. What was its acceleration, assumed constant?
*March 25, 2011 by Lucas*

**physics**

A certain car is capable of accelerating at a uniform rate of 0.93 m/s2. What is the magnitude of the car’s displacement as it accelerates uniformly from a speed of 86 km/h to one of 98 km/h? Answer in units of m
*November 11, 2012 by Anne*

**physics**

A certain car is capable of accelerating at a uniform rate of 0.84 m/s 2 . What is the magnitude of the car’s displacement as it accelerates uniformly from a speed of 84 km/h to one of 97 km/h? Answer in units of m
*December 13, 2012 by Anonymous*

**physic **

A police car is travelling in a straight line with constant speed vp.A truck travelling in the same direction with speed 3/2 vp passes the police car.The truck driver realizes that she is speeding and immediately begins to slow down at a constant rate until she comes to a stop...
*February 11, 2011 by shaiz*

**Physics 203 ( College)**

A disk of radius 12 cm, initially at rest, begins rotating about its axis with a constant angular acceleration of 7.8 rad/s2. What are the following values at t = 4.0 s? (a) the angular velocity of the disk (b) the tangential acceleration at and the centripetal acceleration ac...
*April 4, 2011 by Kayla*

**PHYSICS**

5. What is the maximum acceleration a car can undergo if the coefficient of static friction between the tires and the ground is 0.24? acceleration max=
*February 23, 2014 by sean*

**physics**

A car which is traveling at a velocity of 9.6 m/s undergoes an acceleration of 4.2 m/s2 over a distance of 450 m. How fast is it going after that acceleration?
*July 31, 2014 by Auqib Ihsan *

**physics**

A sports car of mass 1300 kg (including the driver) crosses the rounded top of a hill (r = 86 m) at 23 m/s. Determine the normal force exerted by the car on the 74 kg driver. Determine the car speed at which the normal force on the driver equals zero.
*February 22, 2010 by Anonymous*

**physics**

solid sphere of uniform density starts from rest and rolls without slipping down an inclined plane with angle è = 30o. The sphere has mass M = 8 kg and radius R = 0.19 m . The coefficient of static friction between the sphere and the plane is ì = 0.64. What is the magnitude of...
*March 31, 2013 by phil*

**Physics**

You're driving down the highway at 20m/s when you see a dog you don't want to crush it 35 m in front of you. Your reaction time before stepping on the brakes is 0.5s, and acceleration created by your brakes is 10 m/s^2 what was the distance travelled before coming to a stop?
*February 9, 2014 by Mya*

**Physics**

You're driving down the highway at 20m/s when you see a dog you don't want to crush it 35 m in front of you. Your reaction time before stepping on the brakes is 0.5s, and acceleration created by your brakes is 10 m/s^2 what was the distance travelled before coming to a stop?
*February 9, 2014 by Mya*

**Physics**

A uniform solid sphere rolls down an incline without slipping. If the linear acceleration of the center of mass of the sphere is 0.21g, then what is the angle the incline makes with the horizontal?
*March 16, 2012 by Sean*

**physics**

determine the acceleration for a jet taking off on a run way as it starts from rest and reaches a velocity of 50m/s over a period of 10s
*September 20, 2012 by damarcus foggle*

**Physics**

A stone is dropped from a height of 50 m above the ground will it has a uniform or a non-uniform speed as it moves towards the ground.
*June 21, 2014 by Rajkumar*

**Physics**

A car is stopped at a traffic light. It then travels along a straight road so that its distance from the light is given by x(t) = bt2 - ct3, where b = 2.60 m/s2 and c = 0.150 m/s3. (a) Calculate the average velocity of the car for the time interval t = 0 to t = 8.0 s. m/s (b) ...
*February 4, 2011 by Anonymous*

**Physics**

How do we know that 6 seconds of uniform acceleration at 60 mph is equivalent to 6 seconds travel at 30 mph?
*September 9, 2009 by sandhu*

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