Summative Test

The motion of an object with constant acceleration is also known as _____

• Motion

• Uniform motion

• Constant Motion

• Uniformly Accelerated Motion

A ball is hit at an angle of 30°. At what point in its trajectory does this projectile have the least speed?

• just after it was launched

• at the highest point in its flight

• just before it hits the ground

• halfway between the ground at the highest point

A ball is hit at an angle of 30° and it reaches a distance of 50m. Given the same initial velocity, at what other angle should a ball be hit to reach the same distance?

• 15°

• 45°

• 60°

• 75°

At what angle should a water hose be aimed in order for the water to land with the greatest horizontal range?

• 0°

• 30°

• 45°

• 60°

In the illustration, complementary angles result in the same range but different ___ of a projectile.

• range

• height

• initial velocity

• final velocity

Alyanna is playing golf, at what angle should she hit the golf ball to get its maximum range?

• 70°

• 30°

• 45°

• 60°

A moderate force will break an egg. However, an egg dropped on the road usually breaks, while one dropped on the grass usually doesn't break. This is because for the egg dropped on the grass:

• The change in momentum is greater

• The change in momentum is less

• The time interval for stopping is greate

• The time interval for stopping is less

A ball is hit at an angle of 30° and it reaches a distance of 50m. Given the same initial velocity, at what other angle should a ball be hit to reach the same distance?

• 15°

• 45°

• 60°

• 75°

In certain martial arts, people practice breaking a piece of wood with the side of their bare hand. Use your understanding of impulse to explain how this can be done without injury to the hand.

• Given the same change in momentum, when the time interval is smaller the impact force is bigger.

• Given the same change in momentum, when the time interval is bigger the impact force is bigger

• Given the same change in momentum, when the time interval is smaller the impact force is smaller

• Given the same change in momentum, when the time interval is bigger the impact force is smaller.

Alyanna is playing golf, at what angle should she hit the golf ball to get its maximum range?

• 70°

• 30°

• 45°

• 60°