Unit 2 Multiple Choice Game

A barrel is rolling along a frictionless, horizontal surface. Which of the following describes the motion of the barrel as it continues to roll along the surface?

• The cart will slow down as it runs out of the forward force.
• The cart will continues to roll with constant speed.
• The cart will continues to roll with constant speed only if it is rolling downhill.
• The cart will slow down as it uses up its speed.

Which object has the most inertia?

• A 0.001-kg bumblebee traveling at 200 m/s
• A 0.1-kg baseball traveling at 200 m/s
• A 5-kg bowling ball traveling at 200 m/s
• A 10-kg tricycle at rest

3. An athlete walks with a piece at ticker tape attached to herself with a tape timer running, and produces the tape shown. According to the tape, she was traveling with

• Constant velocity
• Positive acceleration
• Negative acceleration
• Constant velocity, then negative acceleration

A track coach with a meter stick and a stopwatch is trying to determine if a student is walking with a constant speed. He should

• Measure the walker’s speed repeatedly for short time intervals to see if it is always the same.
• Measure the total distance the students travels and the total time to get the average speed.
• Measure the beginning and ending speed only to see if they are the same.
• Use the meter stick to measure the student stride length and time how long it takes to take one step

If a cart is traveling with uniform negative acceleration, what conclusion can be drawn about the forces acting on the cart?

• The cart must be frictionless.
• The cart must be rolling downhill.
• The cart must have a net unbalanced forces acting on it.
• No forces are needed; the cart will naturally slow down.

A student wants to set up an experiment to determine the effect of a net force on an object’s acceleration. To do this, she should

• Vary the force acting on the object and the mass of the object at the same time
• Vary the mass of the object , but not the force acting on the object
• Vary the force acting on the object, but not the object mass
• Keep both the force acting on the mass and the mass of the object constant as it rolls along a horizontal surface

A 2-kg block is dropped from the roof of a tall building at the same time a 6-kg ball is thrown horizontally from the same height. Which statement best describes the motion of the block and the motion of the ball?

• The 2-kg block hits the ground first because it has no horizontal velocity.
• The 6-kg ball hits the ground first because it has more mass.
• The 6-kg ball hits the ground first because it is round.
• The block and the ball hits the ground at the same time because they have the same vertical acceleration.

A pitching machine launches a baseball horizontally with no spin. Which of the following statement correctly describes the ball’s motion in the air as the launch speed is increased?

• The ball’s acceleration increases, and the distance it falls in one second decreases.
• The ball’s acceleration remains the same, and the distances the ball falls in one second decreases
• The ball’s acceleration remains the same, and the distance it falls in one second increases
• The ball’s acceleration remains the same, and the distance it falls in one second remains the same

A student is holding a book that has a weight of 20 N in his hands while sitting in a chair. The man claims that the book must be attracting Earth with a force of 20 N. His claim must be

• True due to newton’s third law of action reaction.
• False because Earth is much larger than the book.

Which diagram of 5-kg mass resting on a table correctly represent the FORCE of the table on the mass?

• The 50kg pushing down shows the force of the table on the mass.
• The 5N pushing down
• The 50N pushing up from the center of the mass.
• The 5kg pushing up.