MOCK PRE-UPS 2 SP015 2022/2023

The ability to do work or cause change

• Work

• Momentum

• Energy

• Power

The product of the net force on an object and the distance through which the object is moved.

• Joule

• Power

• Work

• Energy

Which of the following TRUE about kinetic energy?

• Kinetic energy depends on height.

• Kinetic energy depends on elongation.

• Kinetic energy depends on shape.

• Kinetic energy depends on motion.

Figure shows a toy car is pushed to compress a spring that attached to a wall.

What is the transformation of energy when the toy car is released?

• Kinetic energy to elastic potential energy

• Elastic potential energy to gravitational potential energy

• Gravitational potential energy to kinetic energy

• Elastic potential energy to kinetic energy

A ball is dropped from a certain height and falls freely. The gain in kinetic energy of the ball is

• equal to the potential energy of the ball

• equal to the work done against air resistance

• directly proportional to the distance fallen

• directly proportional to the gain in the speed

Centripetal acceleration acts __________ of the circular path.

• towards the center

• along the circumference

• away from the center

• perpendicular to the plane

Centripetal acceleration is GREATER when ________

• the radius of the circular motion is decreased

• the radius of the circular motion is increased

• the linear speed is decreased

• the linear speed is unchanged

What is the force that causes centripetal acceleration when a car goes around a curve?

• Friction

• Gravity

• Normal

• Tension

Which of the following is NOT a unit of rotational speed?

• Meters per second

• Revolutions per second

• Revolutions per minute

• Rotations per second

In one revolution there are ___________

• 1 radian

• π radian

• 2 radian

• 2π radian