Speed, Velocity, and Acceleration

Calculate the distance traveled by a car moving at a speed of 60 m/s for 10 seconds.

• 600 meters

• 1200 meters

• 360 meters

• 45 meters

Explain the difference between speed and velocity.

• Speed is a physical quantity, velocity is a mental concept.

• Speed and velocity are the same thing.

• Speed is a vector, velocity is scalar.

• Speed is scalar, velocity is vector.

What is the acceleration due to gravity on Earth?

• 9.81 m/s^2

• 8.91 m/s^2

• 10.25 m/s^2

• 6.67 m/s^2

Interpret a speed-time graph where the slope is constant.

• The time is changing at a constant rate

• The speed is changing at a constant rate, indicating uniform acceleration or deceleration.

• The graph represents distance-time relationship

• The speed is constant, indicating no motion

Tags

NGSS.MS-PS3-1

Interpret a velocity-time graph where the slope is increasing.

• The object is accelerating at a constant rate.

• The object is decelerating at a constant rate.

• The object is moving at a constant speed.

• The object is at rest.

Tags

NGSS.MS-PS3-1

A car accelerates from rest at a rate of 2 m/s^2. Calculate its velocity after 5 seconds.

• 15 m/s

• 20 m/s

• 10 m/s

• 25 m/s

How is distance related to displacement?

• Distance and displacement are the same concept.

• Distance is always greater than displacement.

• Displacement is a vector quantity that represents the change in position from the initial to the final point, whereas distance is a scalar quantity that represents the total length of the path traveled.

• Distance is a vector quantity, while displacement is a scalar quantity.

Define acceleration and provide an example.

• Acceleration is the rate of change of time with respect to velocity. An example is a car taking 10 seconds to reach 60 mph.

• Acceleration is the rate of change of speed with respect to distance. An example is a car accelerating from 60 to 80 mph.

• Acceleration is the rate of change of distance with respect to time. An example is a car traveling 60 mph for 10 seconds.

• Acceleration is the rate of change of velocity with respect to time. An example is a car increasing its speed from 0 to 60 mph in 10 seconds.

Tags

NGSS.HS-PS2-1

Explain how speed and velocity are different in terms of direction.

• Speed and velocity are the same concept and can be used interchangeably.

• Speed is the rate of change of distance with respect to time, whereas velocity is the rate of change of displacement with respect to time.

• Speed is a scalar quantity, while velocity is a vector quantity.

• Speed is the rate of change of time with respect to distance, whereas velocity is the rate of change of time with respect to displacement.

What does a horizontal line on a speed-time graph represent?

• Constant speed

• Acceleration

• Decreasing speed

• Variable speed

Tags

NGSS.MS-PS3-1