# Physics

Mutiple choice:

A car travelling at 10 m/s accelerates at 3 m/s^2. Its new velocity is
A.) 12 m/s B.) 22m/s C.) 17 m/s D.) Can not be determined.

Which of the following is not acceleration?
A.) rate of change of speed in a particular direction B.) rate of change of motion in a particular direction. C.) rate of change of velocity D.) rate of change of displacement

An object will weigh least on
A.) Jupiter B.) Pluto C.) Earth D.) Saturn

On a graph of distance verse elasped time, the slope of the tangent to the curve at any single point is
A.) average speed B.) constant speed C.) variable speed D.) instantenous speed

An object is accelerated from the rest of a rate at 2 m/s^2. At the end of 8 seconds, the magnitude of the velocity is
A.) 2.0 m/s B) 6.0 m/s C.) 8.0 m/s D.) 16 m/s

After a body has fallen freely from rest to 4.0 seconds, its velocity is apporoximentaly
A) 20 m/s B) 40 m/s C.) 60 m/s D.)80 m/s

A force with a magnitude of 100 newtons acts at a 30 degree angle from the horizon. The "X" component of this force is
a) 87 newtons B) 50 newtons C) it is at rest D) its motion is changed

An object is not considered to be in a state if equilibrium if
A) it is not moving at constant speed in a straight line B) there is an unbalanced force acting on the body
C) It is at rest D) its motion is unchanged

1. 👍 0
2. 👎 0
3. 👁 219
1. 1D. Cannot be determined, because we don't know the time.

2D.

5D.V = a*t = 2m/s^2 * 8s. = 16 m/s.

6B. V = Vo + g*t = 0 + 10*4 = 40 m/s.

7A. X = 100*cos 30 = 87 N.

8B.

1. 👍 0
2. 👎 0

## Similar Questions

1. ### physics

Car A is travelling at 22.0 m/s and car B at 29.0 m/s. Car A is 300 m behind Car B when the drive of car A accelerates his car with an acceleration of2.4 m/s2. How long does it take Car A to overtake Car B?

2. ### Physics

1. A stationary curling stone is struck in a glancing collision by a second curling stone of equal mass. If the first stone moves away at a velocity of 0.92 m/s [N71oW] and the second stone moves away at a velocity of 1.25 m/s

3. ### physics

A motorist is driving at a constant velocity of 28 m/s when he decides to pass a car that is in front of him. He accelerates at a rate of 2.5 m/s2 for 3.0 seconds while passing the car. What is his velocity at the end of the 3.0

4. ### Science

A car of mass 500kg is travelling along aflat road accelerates at 0.2m/s after its engine provides a forward force of 300N

1. ### physics

A motorist is driving at a constant velocity of 28 m/s when he decides to pass a car that is in front of him. He accelerates at a rate of 2.5 m/s2 for 3.0 seconds while passing the car. What is his velocity at the end of the 3.0

2. ### physics

a car travelling at constant velocity passes a stationary motorcycle at a traffic light as the car overtakes the motorcycle,the motorcycle accelerates uniformly from rest for 10 sec the following displacement time graph represents

3. ### Physics

**I JUST NEED THE STEPS ON HOW TO SOLVE THE PROBLEMS** An object experiences an acceleration of 6.8m/s^2. As a result, it accelerates from rest to 24m/s. How much distance did it travel during that acceleration? A car which is

4. ### Physics

If a curve with radius of 60 m is properly banked for a car travelling 60 km/h, what must be the coefficient of static friction for a car not to skid when travelling at 90 km/h?

1. ### Physics

A policeman travelling 60 km/h spots a speeder ahead , so he accelerates his vehicle at a steady rate of 2.22 m/s^2 for 4.00 s, at which time he catches up with the speeder. a) How fast was the policeman travelling in m/s? b) How

2. ### Physics help

A car with a mass of 1800 kg is initially travelling with a velocity of 22 m/s [N] when it collides with a truck with a mass of 3200 kg traveling with a velocity of 14 m/s [E]. If the two vehicles become attached during the

3. ### Physics 12

A sports car is travelling along a highway at a constant velocity of 36 m/s [N] exceeding the speed limit. It passes an unmarked police car parked on the shoulder of the highway. The police car accelerates from rest, 3.0 s after

4. ### physics

1) A car, initially traveling with a uniform velocity, accelerates at a rate of 1.0 m/s2 for a period of 12.0 seconds. If the car traveled 190.0 m during this 12.0 second period, what was the velocity of the car when it started to