Physics

The rate of change of velocity is called:

• Distance

• Acceleration

• Speed

• Displacement

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When speed and direction of motion of a body do not change then the body will have:

• Uniform velocity

• Uniform acceleration

• Negative velocity

• Negative acceleration

The distance covered by a moving object per unit time is called:

• Velocity

• Acceleration

• Speed

• Displacement

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Can an object's average velocity equal zero when object's speed is greater than zero?

• Yes, when the object moves in a straight line at a constant rate.

• Yes, when the object returns to its original position.

• No, it is impossible because they are always equal

• No, it is impossible because the magnitude of the velocity is always greater than speed.

A ball which has been dropped vertically downward on to the floor rebounds upward. Which of the following graph shows the variation of velocity with time?

• 
• 
• 
• 

Tags

NGSS.HS-PS2-1

NGSS.HS-PS2-2

An object is moving with a uniform acceleration of 5 m s^-2. A graph of displacement against time shows the motion of this object having a gradient which

• increases with time.

• decreases with time

• remain constant with time

The speedometer on your car tells you

• average velocity
• instantaneous velocity
• average speed
• instantaneous speed

At 100 seconds, how much distance had this object traveled?

• 0 m

• 10 m

• 40 m

• 80 m

A car is traveling south for 250 meters over the course of 100 seconds. What was the car's average velocity?

• 0.4 m/s south

• 0.4 m/s

• 2.5 m/s

• 2.5 m/s south

What is the average velocity of the object between 0 and 10 seconds?

• 6.0 m/s

• 1.5 m/s

• -4 m/s

• 0 m/s