# PHYSICS

A 5.0-kilogram sphere, starting from rest, falls freely 22 meters in 3.0 seconds near the surface of a planet.
Compared to the acceleration due to gravity near Earth’s surface, the acceleration due to gravity near the
surface of the planet is approximately
(1) the same (3) one-half as great
(2) twice as great (4) four times as great

1. 👍 2
2. 👎 0
3. 👁 1,471

1. 👍 0
2. 👎 0
2. Hmmmm. You have to be a highschool boy. You use the immature name PIMP, and you expect serious responses from adults. Maybe you are just joking about you need help, how are we to know?

1. 👍 0
2. 👎 10
3. On earth, the distance an object would fall in 3.0 seconds is
(g/2)*t^2 = 4.9*9 = 44.1 m

On planet X, it falls 22 meters.

The distance it falls in a given time t is proportional to the acceleration of gravity.

Reach your own conclusion from that.

1. 👍 2
2. 👎 2
4. 7 On the surface of Earth, a spacecraft has a mass
of 2.00 × 104 kilograms. What is the mass of the
spacecraft at a distance of one Earth radius
above Earth’s surface?
(1) 5.00 × 103 kg (3) 4.90 × 104 kg
(2) 2.00 × 104 kg (4) 1.96 × 105 kg

1. 👍 0
2. 👎 0
5. The mass does not change with position.

1. 👍 0
2. 👎 1
6. bobpursley, instead of wasting time on speculating about the poster, just actually help out. Clearly this person needs help because he deliberately came on the site, asking for help. Immature name or not.

Anyway, the answer is one half as great. Here's how you find out:
First the givens are:
vi=0 (b/c it starts at rest)
m= 5kg
d= 22m
t= 3s
a on Earth always equals 9.81 m/s*s

Given these variable, I surmised that the best formula to use is d=vi(t)+(1/2)at^2.

When you plug in the variables given, you are left with:
22=(1/2)a(3)^(2) ,which gives you:
22=4.5(a)

Now its basic algebra. Divide both sides by 4.5 and you end up getting a=4.8 repeating. When you divide 9.81 by 2, you get 4.905, which is close enough, showing you that it one half as great.

Hope that helps! And good luck on the regents.

1. 👍 5
2. 👎 0
7. >Uses the name PIMP
>Expects a serious homework question

1. 👍 0
2. 👎 2

## Similar Questions

1. ### Physics

An green hoop with mass mh = 2.4 kg and radius Rh = 0.14 m hangs from a string that goes over a blue solid disk pulley with mass md = 2.2 kg and radius Rd = 0.1 m. The other end of the string is attached to a massless axel through

asked by stewart on November 10, 2014
2. ### math

The volume V of a sphere of radius r is given by the formula V (r) = (4/3)πr^3. A balloon in the shape of a sphere is being inflated with gas. Assume that the radius of the balloon is increasing at the constant rate of 2 inches

asked by name on July 18, 2020
3. ### physics

A 3.1-kilogram gun initially at rest is free to move. When a 0.015-kilogram bullet leaves the gun with a speed of 500. meters per second, what is the speed of the gun?

4. ### Math

Radio signals travel at a rate of 3x10^8 meters per second.how many seconds would it take for a radio signal to travel from a satellite to the surface of earth if the satellite is orbiting at a height of 3.6x10^7 meters? A. 8.3

asked by Wheels On The Bus on February 21, 2020
5. ### Physics

A 4-kilogram mass has a speed of 6 m/s on a horizontal frictionless surface. The mass collides head-on and elastically with an identical 4-kilogram mass initially at rest. The second 4-kilogram mass then collides head-on and

asked by Hannah on January 17, 2008
1. ### Physical Science

This is a velocity versus time graph of a car starting from rest. If the area under the line is 10 meters, what is the corresponding time interval? A. 2 seconds B. 4 seconds C. 5 seconds D. 10 seconds E. 15 seconds

asked by Mimic on June 30, 2020
2. ### Physics

Kelly is driving a car with a mass of 800 kilograms in a south direction with a speed of 18 meters/second. Dominic is driving a truck with a mass of 1500 kilograms with a velocity of 15 meters/second to the east. They undergo

asked by Fredrick on March 27, 2013
3. ### Physics

What is the momentum of a 1.5 × 103 kilogram van that is moving at a velocity of 32 meters/second? A. 46.9 kilogram meters/second B. 4.7 × 103 kilogram meters/second C. 4.85 × 102 kilogram meters/second D. 4.85 × 104 kilogram

asked by fredrick on March 13, 2013
4. ### Physics

A body of mass 2kg falls freely from rest through a height of 50m and comes to rest having penetrated 5.0cm of sand. Calculate. (I) The velocity with which the ball hits the sand. (II) The time taken in falling. (III) The average

asked by Anonymous on January 25, 2019
5. ### Physics

A sphere of radius r starts from rest and rolls without slipping along a curved surface, dropping through a vertical distance of 0.500 m. Find the final speed v of the sphere’s center of mass.

asked by Clinton on November 24, 2013
6. ### Physics

An object is allowed to fall freely near the surface of an unknown planet. The object falls 80 meters from rest in 5.0 seconds. The acceleration due to gravity on that planet is? Would the answer be 16?

asked by Hannah on September 27, 2009