Question 1

A boy pulls back on a slingshot, as shown in the image. Which type of energy is primarily increased in the slingshot as he pulls it back?

Accepted Answer

Elastic potential energy

Question 2

If the boy releases the slingshot, what form of energy will the elastic potential energy primarily convert into?

Accepted Answer

Kinetic energy

Question 3

Which of the following best describes the process of the boy doing work on the slingshot?

Accepted Answer

He applies a force to the slingshot, causing it to be displaced, transferring energy to the system.

Question 4

If the boy pulls the slingshot back with a force $$F$$ over a distance $$d$$, and the force is applied in the same direction as the displacement, what is the work done on the slingshot?

Accepted Answer

$$W = Fd$$

Question 5

Suppose the boy pulls the slingshot at an angle $$	heta to $$the direction of displacement. What is the correct formula for the work done?

Accepted Answer

$$W = Fd \cos 	heta$$

Question 6

If the boy pulls the slingshot back with a force of 20 N over a distance of 0.3 m, directly in line with the displacement, how much work does he do?

Accepted Answer

$$W = 6 J$$

Question 7

Which of the following statements is true about work and energy transfer in the context of the slingshot?

Accepted Answer

Work is done when the force causes a displacement in the direction of the force, transferring energy to the system.

Question 8

If the boy pulls the slingshot but does not release it, what happens to the energy he transferred?

Accepted Answer

It is stored as elastic potential energy in the slingshot.

Question 9

If the force applied by the boy is not constant but increases as the slingshot is stretched, which of the following best describes how to calculate the total work done?

Accepted Answer

Integrate the force over the displacement: $$W = \int F(x) dx$$

Question 10

Which of the following scenarios does NOT involve the transfer of energy as work?

Accepted Answer

A person pushes against a stationary wall with all their strength.

Work and Energy Transfer in Physics

Guida di studio - Domande di pratica

Study guide - Flashcard