12010401

1.) What best describes Force?

• A rate of doing work

• A process to transform energy as it is displaced

• A push or pull acting upon an object
• An ability to do work

2.) A 2-kg bowling ball was rolled with an acceleration of 1.875 m/s². While rolling, friction from the floor exerted a force of 2.40 Newtons. What is the net force of the bowling ball?

3.) Which of the following situation involves a work is done?

• Sitting on a chair
• Lifting a heavy box to a shelf
• Pushing on a wall

• Carrying a book while standing still

4.) A box is moved 5.4 meters along a horizontal floor at a constant speed by a force of 65 Newtons which makes an angle of 37° above the horizontal. How much work is done on the box by the force?

5.) What is the S.I. unit for power?

• Ampere

• Watts

• Volts

• Ohms

6.) It is the energy in motion (full term)

7.) A cart was going the tracks with a mass of 7.5 kg, travelling at a speed of 10.3 m/s. Find the kinetic energy of the cart.

8.) A 2,500-kg cement mixer truck is cruising at a speed of 24 m/s. The driver suddenly increases its speed to 30 m/s. How much work was done during the speeding up.

9.) A 69-kg diver was on a cliff which is 47 meters above from the ocean. How much is their potential energy from the ocean surface horizontal?

10.) In which scenario below does the ball have more gravitational potential energy when sitting at the top?

• Scenario A, because the more path taken, more GPE is attained

• None, both scenario don't have GPE, as they are not fallen yet

• Scenario B, because the less path taken, the less GPE is wasted

• Neither, GPE doesn't depend on the path taken