Two carts (m= 0.4 kg each) are placed on an aluminum track. the first cart pushed with the initial velocity of 1.5 m/s towards the second cart, which remains at rest until the collision. determine the velocities if both carts after the collision.

Assume this car is driven off a cliff . how many arrows of force need to be drawn in the free body diagram? assume no air resistance -five -one -three -four

An element becomes a positively charged ion when itloses protons.loses electrons.gains electrons.gains neutrons.

Aball is thrown from the top of a building with an initial velocity of 21.9 m/s straight upward, at an initial height of 51.6 m above the ground. the ball just misses the edge of the roof on its way down, as shown in the figure. (a) determine the time needed for the ball to reach its maximum height. (b) determine the maximum height. (c) determine the time needed for the ball to return to the height from which it was thrown, and the velocity of the ball at that instant. (d) determine the time needed for the ball to reach the ground. (e) determine the velocity and position of the ball at t = 5.35 s.