# physics

posted by .

an object is initially moving 15.0 m/s. a minute later, it is moving 25.0 m/s in the opposite direction. What is the displacement and acceleration?

• physics -

change in velocity = final - initial = -25 - 15 = -40
A = change in velocity/time = -40/60 m/s^2
= -2/3 m/s^2

average velocity = (15-25) /2 = - 10/2 = -5 m/s
displacement = average velocity*time = -5*60 = -300 meters

## Similar Questions

1. ### physics

1. A 10.0 g object moving to the right at 25.0 cm/s makes an elastic head-on collision with a 15.0 g object moving in the opposite direction at 36.0 cm/s. Find the velocity of each object after the collision. 10.0 g object: 15.0g object: …
2. ### AP Physics

A 3kg object initially moving in the positive x-direction with a velocity of +5m/s collides with and sticks to a 2kg object initially moving in the negative y-direction with a velocity of -3m/s. Find the final components of velocity …
3. ### physics

a 10.0-g object moving to the right at 20.0 cm/s makes a elastic head-on collision with a 15-g object moving in the opposite direction at 30.0 cm/s find the velocity of each object after the collision.
4. ### physics

For the one dimensional motion of an object along an axis, choose all the statements that are True. 1.) If the object reverses direction and goes the opposite way, the sign of the velocity changes. 2.) If the acceleration has the opposite …
5. ### physics...PLZ HELP! =)

A constant force acts on a moving object. The object makes a fixed magnitude of displacement in some direction. In general, in what direction is the displacement that will result in the object traveling with the least kinetic energy …
6. ### Physics

A 10.0 g object moving to the right at 19.0 cm/s makes an elastic head-on collision with a 15.0 g object moving in the opposite direction at 30.0 cm/s. Find the velocity of each object after the collision.
7. ### Physics

A 2.87 kg object initially moving in the positive x-direction with a velocity of +4.87 m/s collides with and sticks to a 1.96 kg object initially moving in the negative y-direction with a velocity of -2.55 m/s. Find the final components …
8. ### physics

If an object is initially moving with a constant velocity of 20m/s towards positive x-axis and after 5 sec it changes its direction and moving at an angle of 30o with x-axis, find magnitude and direction of its acceleration.
9. ### physics..

This seems easy and yet i'm skeptical if these are actually supposed to be difficult.. It asks for a lot. It's seems repetitive.. 1. a falling stone takes .30 seconds to travel past a window 2.2m tall. From what height above the top …
10. ### physics

In which one of the following circumstances does the principle of conservation of mechanical energy apply, even though a nonconservative force acts on the moving object?

More Similar Questions