Physics Test #2

45°

If air resitance is not a factor, maximum range is achieved when the projection angle is

neither/ same

In a football game a, 170 pound halfback is takcled by a 245 pound gaurd. Each, of course, exerts a force on the other. Which player exerts the larer force on the other?

170 half back

In a football game a, 170 pound halfback is takcled by a 245 pound gaurd. Each, of course, exerts a force on the other. Which player experiences the larger acceleration?

The force of collision on the truck is equal to the force of collision on the car

A 20-ton truck collides with a 1500-lb car and causes a lot of damage to the car

The ball is not acted upon by a force in the horizontal direction

A ball rolls off the edge of a table, and air resistance is assumed to be a negligible. The horizontal compponent os the ball's velocity remains constant during its entire trajectory because

the same

A football is thrown on a long pass. Compared to the ball's initial horizontal velocity component, the velocity at the highest point

over the package

A pilot drops a package from a plane flying horizontally at a conastant speed. Ignore the effects of air resistance on the package. When the package hits the ground, the horizontal location of the plane will be

over the package

A pilot drops a package from a plane flying horizontally at a constant speed. Ignore the effects of air resistance on the package. When the package hits the ground, the horizontal location of the plane will be

the net force is zero

An object is dropped from a helicopter. Whn it reaches terminal velocity

move with a constant velocity in a straight line

Out in space, far from planets and stars, there is essentially no air resistance and no gravity. A space probe moving out there will

zero

The force required to keep a rocket ship moving at a constant velocity in deep space is

Both cars accelerate at a rate of g sin(30°)

Two toy cars ( 16 kg and 2 kg) are released simultaneously on an inclined plane tht makes an angle of 30° with the horizontal. Which statement best describes their acceleration after being released?

no forces move you forward

You are standing in a moving bus, facing forward, and you suddenly move forward as the bus comes to an sudden stop. What force causes you to move forward?

horizontal

You toss a ball to your friend. When the ball raches its maximum altitude, its velocity is

no forces move you forward

you are standing in a moving bus, facing forward, and you suddenly move forward as the bus comes to a sudden stop. What force causes you to move forward?