Unit 1 and 2 Review

Unit 1 and 2 Review

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Unit 1: Velocity 101

Multiple Choice

Which of the following dot diagrams shows an object that is accelerating

• A

• B

• Neither object is accelerating

• You can not tell from the dot diagram

Unit 1: Acceleration 101

Multiple Choice

An leftward moving object experiences a rightward acceleration. Which statement best describes what happens to the object's motion?

• The object begins to speed up.

• The object experiences no change in motion.

• The object begins to slow down.

• Not enough information given to predict the motion.

Unit 1 Kinematic Equations

NOTE: You'll mainly use the 1st equation

Multiple Choice

A car with an initial velocity of 16.0 meters per second east slows uniformly to 6.0 meters per second east in 4.0 seconds. What is the acceleration of the car during this 4.0-second interval?

• 2.5 m/s² west

• 2.5 m/s² east

• 4.0 m/s² west

• 4.0 m/s² east

Multiple Choice

The speed of a car is increased uniformly from 11 meters per second to 19 meters per second in 4 seconds. The acceleration of the car during this interval is

• 1.0 m/s²

• 2.0 m/s²

• 4.0 m/s²

• 8.0 m/s²

Unit 1: Position vs. Time Graphs

NOTE: Mainly used to use slope (Velocity) to describe motion.

Multiple Choice

Which graph shows the object standing still?

• A

• B

• C

• D

Multiple Choice

A baseball player with a lead off of 2nd must run back to base when the pitcher sees he is not on base and attempts to get him out. Which graph best represents the baseball player running back to 2nd base?

• Graph 1

• Graph 2

• Graph 3

• Graph 4

Unit 1: Velocity vs. Time Graphs

NOTE: Used for both for calculating slope (Acceleration) and describing motion.

Multiple Choice

This is a velocity-time graph. What is the object doing in segment C?

• Positive acceleration

• Negative acceleration

• Constant Velocity

• Not moving

Multiple Choice

During which interval is the object traveling at a constant velocity?

• B to C

• D to E

• F to G

• it traveling at a constant velocity during all of the intervals shown.

Multiple Choice

The graph below represents the relationship between velocity and time for an object moving along a straight line. What is the magnitude of the object’s acceleration?

• 5.0 m/s²

• 8.0 m/s²

• 20 m/s²

• 10 m/s²

Multiple Choice

A car that was initially at rest, speeds up with a constant acceleration. Which of the following graphs best represents this scenario?

• Graph 1

• Graph 2

• Graph 3

• Graph 4

Multiple Choice

Which best describes the vertical motion of a projectile, assuming no air resistance?

• Acceleration of -10 m/s²

• Accelerations of -5 m/s²

• An increasing acceleration every second

• Constant velocity

Multiple Choice

Which best describes the horizontal motion of a projectile, assuming no air resistance?

• Acceleration of -10 m/s²

• Acceleration of -5 m/s²

• An increasing acceleration every second

• Constant velocity

Multiple Choice

A projectile with mass m is fired with initial horizontal velocity vx from height h above level ground. Which change would have resulted in a greater time of flight for the projectile? [Neglect friction.]

• decreasing the mass to m/2

• decreasing the height to h/2

• increasing the initial horizontal velocity to 2v_x

• increasing the height to 2h

Unit 2: Angled Launch

NOTE: You mainly need to know ideal angle and motion characteristics (i.e. velocities at top and accelerations.)

Multiple Choice

A ball is thrown with a velocity of 35 meters per second at an angle of 30.° above the horizontal. Which quantity has a magnitude of zero when the ball is at the highest point in its trajectory?

• the vertical acceleration of the ball

• the momentum of the ball

• the vertical component of the ball’s velocity

• the horizontal component of the ball’s velocity

Multiple Choice

A soccer ball is kicked into the air from level ground with an initial speed of 20. meters per second and returns to ground level. At which angle above the horizontal should the ball be kicked in order for the ball to travel the greatest total horizontal distance?

• 15°

• 30°

• 45°

• 75°

Multiple Choice

A ball is thrown across the field in a parabolic path. At the highest height, describe the motion of the ball.

• The ball is still moving horizontally, but at rest vertically.

• The ball completely stops moving.

• The ball is still moving vertically, but at rest horizontally.

• Not enough information to know.