20 Week Check - STEM Block1

A moving body must undergo a change of

• Velocity

• Acceleration

• Position

• Direction

The graph shows the distance and time traveled by four cars moving with constant speed. Which car traveled the slowest?

• Car 1

• Car 2

• Car 3

• Car 4

The graph represents the relationship between distance and time for an object moving in a straight line. According to the graph, the object is

• Motionless

• Moving at constant speed

• accelerating

• decelerating

A runner changing speed from 3 m/s to 5 m/s is an example of

• Acceleration

• Changing direction

• Velocity

• Constant Speed

Which statement about the movement of an object with zero acceleration is true?

• The object must be at rest

• The object must be slowing down

• The object may be speeding up

• The object may be in motion

As an object falls to the ground from a height, its speed

• Increases

• Decreases

• Remains the same

Over time, ignoring air resistance, the horizontal velocity of a projectile

• Remains the same

• Increases

• Decreases

Which statement best describes a ball being thrown vertically upward with an initial velocity, v?

• Velocity decreases, stops, then increases

• Velocity increases, then decreases.

• Velocity remains the same

• Velocity decreases then remains the same.

A ball is thrown horizontally off a cliff. If the

velocity of the ball increased, the horizontal distance traveled would

• Increases

• Decreases

• Remains the Same

A ball is thrown horizontally off a cliff. If the

height of the cliff increased, the time of flight

• Increase

• Decrease

• Remain the same