Summative Test in Physics 9

If a freely falling ball is somehow equipped with a speedometer, by how much would its speed-reading increase for every second?

• 0 m/s

• 9.8 m/s

• 10 m/s

• 20 m/s

A sepak takraw ball is hit vertically upward by a player. What is its acceleration after 1 second?

• 0

• 1 m/s^2

• 9.8 m/s^2

• -9.8m/s^2

A volleyball is tossed vertically upward, with an initial velocity of 5 m/s, and caught back at the same level as when it was thrown. What is the velocity of the ball at that point?

• 0 m/s

• -5 m/s

• 9.8 m/s

• -9.8 m/s^2

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

• Motion

• Uniform Motion

• Constant Motion

• Uniformly Accelerated Motion

A ball is thrown vertically upward. What is its instantaneous speed at its maximum height?

• 0

• 5 m/s

• 9.8 m/s

• 9.8 m/s^2

A ball is hit at an angle of 30 degrees. 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 and the highest point

Suppose a ping pong ball is tossed. When the ball reaches the highest point, which statement about the ball’s velocity and acceleration is true?

• Both its velocity and its acceleration are zero.

• Its velocity is zero and its acceleration is not zero.

• Its velocity is not zero and its acceleration is zero.

• Neither its velocity nor its acceleration is zero.

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°

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

• 15°

• 45°

• 60°

• 75°

A __________ is an object upon which the only force acting is gravity.

• projectile

• range

• path

• trajectory