A bullet is fired through a board 14.0 cm thick in such a way that the bullet's line of motion is perpendicular to the face of the board. The initial speed of the bullet is 580 m/s and it emerges from the other side of the board with a speed of 480 m/s. What is acceleration of the bullet as it passes through the board and total time the bullet is in contact with the board.

A Ford passes a Toyota on the road (both vehicles are traveling in the same direction). The Ford moves at a constant speed of 35.9 m/s. Just as the Ford passes it, the Toyota is traveling at 16.8 m/s. As soon as the Ford passes the Toyota, the Toyota begins to accelerate forward at a constant rate. Meanwhile the Ford just keeps going at a steady 35.9 m/s to the east. The Toyota catches up to the Ford a distance of 101.4 m ahead of where the Ford first passed it. What was the magnitude of the Toyota s acceleration?     6.8 m/s^2     2.5 m/s^2     13.5 m/s^2     5.0 m/s^2

A Boeing 747 "Jumbo Jet" has a length of 64.5 m. The runway on which the plane lands intersects another runway. The width of the intersection is 24.8 m. The plane decelerates through the intersection at a rate of 5.56 m/s2 and clears it with a final speed of 43.1 m/s. How much time is needed for the plane to clear the intersection?

Nerve impulses in a human body travel at a speed of about 100 m/s. Suppose a person accidentally steps barefoot on a pebble. About how much time does it take the nerve impulse to travel from the foot to the brain (in s)? Assume the person is 1.60 m tall and the nerve impulse travels at uniform speed.