Unit 5 Test: Force and Motion

Calculate the average speed of a car that travels 150 kilometers in 3 hours.

• 45 km/h

• 50 km/h

• 55 km/h

• 60 km/h

A runner completes a 400-meter lap in 50 seconds. What is the runner's average speed?

• 6 m/s

• 7 m/s

• 8 m/s

• 9 m/s

Tags

NGSS.MS-PS3-1

Explain how you would distinguish between speed and velocity when describing the motion of a car moving in a straight line.

• Speed includes direction, while velocity does not.

• Velocity includes direction, while speed does not.

• Both speed and velocity include direction.

• Neither speed nor velocity includes direction.

Interpret the motion of an object that has a constant slope on a distance-time graph.

• The object is accelerating.

• The object is decelerating.

• The object is moving at a constant speed.

• The object is stationary.

Tags

NGSS.MS-PS3-1

A distance-time graph shows a horizontal line. What does this indicate about the object's motion?

• The object is moving at a constant speed.

• The object is accelerating.

• The object is not moving.

• The object is decelerating.

Analyze how balanced forces affect the motion of an object according to Newton's First Law of Motion.

• The object will accelerate.

• The object will decelerate.

• The object will remain in its current state of motion.

• The object will change direction.

A book is lying on a table. Explain the effect of balanced forces acting on the book.

• The book will start moving.

• The book will remain at rest.

• The book will accelerate.

• The book will decelerate.

A car travels 100 km in 2 hours and then 150 km in 3 hours. Calculate the car's average speed for the entire journey.

• 40 km/h

• 50 km/h

• 60 km/h

• 70 km/h

Describe the difference between speed and velocity using an example of a moving bicycle.

• Speed is the rate of motion, while velocity is the rate of motion in a specific direction.

• Speed is the rate of motion in a specific direction, while velocity is the rate of motion.

• Speed and velocity are the same.

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

Tags

NGSS.MS-PS3-1

A car moves with a constant speed of 60 km/h for 2 hours. How far does the car travel?

• 100 km

• 120 km

• 140 km

• 160 km