Unit 1 Review Quiz

Jhovani serves a volleyball. The volleyball covers a distance of 9 meters in 0.5 s. What is the velocity of the volleyball? Round your answer to the nearest whole number.

• 5m/s

• 5m/s^2

• 18m/s

• 18m/s^2

The graph on the left shows the velocity of a car over time.

When, if ever, the car is in equilibrium?

• At 0- 10 seconds, the car is in equilibrium because the velocity increases from 0-20 m/s.

• At 10-30 seconds, the car is in equilibrium because the velocity of the car isn’t changing.

• The car is never in equilibrium since it is always moving.

• The car is always in equilibrium because the graph never curves.

Diego and Dayana are conducting an experiment to determine the acceleration of a ball rolling down a ramp. They release the ball from rest at the top of the ramp and measure the displacement of the ball when it hits the bottom of the ramp. What additional piece of data would they need to calculate the acceleration of the ball?

• The time taken for the ball to reach the bottom of the ramp.

• The initial velocity of the ball.

• The final position of the ball

• The initial position of the ball

The free-body diagram below shows all the forces acting on 10kg container.

What is the acceleration of the container?

• 0.7 m/s^2

• 1.0m/s^2

• 0.3 m/s^2

• 0.5m/s^2

Emily is planning an experiment to determine whether the number of trees is directly proportional to the number of apples. She conducts an experiment and collects the following data(left).

Does the data show a directly proportional relationship?

• No, because the number of apples increases by the same factor as the number of trees.

• No, because the number of apples divided by the mass is a constant value.

• Yes, because the number of trees increases as the number of apples.

• Yes, because the number of trees increases by 2 as the number of apples.

A cart is released from rest at the top of a 1.4 meter long ramp and takes 0.8 seconds to reach the bottom of the ramp. What is the acceleration of the cart?

• 4.375m/s^2

• 1.75m/s^2

• 1.75m/s

• 4.375m/s

The graph on the left shows the position of a deer over time.

What is the velocity of the deer?

• -5.0m/s

• -4.5m/s

• -2.5m/s

• -0.40m/s

The table below shows the position of a deer moving in a straight line over time.

Which of the following statements is true regarding the deer?

• The deer is running at a constant velocity of 1.0 m/s.

• The deer is running at a constant velocity of 10 m/s.

• The deer is accelerating with a constantly increasing velocity.

• The deer is running at a velocity of 10 m/s and is accelerating.

A table has a mass of 0.9 kg and is sitting at rest on the floor. What is the force of gravity on the table?

• 90N

• 0.9N

• 0.6N

• 9.0N

Speed is a vector quantity and velocity is a scalar quantity.

• TRUE

• FALSE

• BOTH are correct.

• Maybe