AP Physics PLEASE HELP ASAP

Question

A boy drags a wooden crate with a mass of 20.0 kg, a distance of 12.0 m, across a rough level floor at a constant speed of 1.50 m/s by pulling on the rope tied to the crate with a force of 50.0 N. The rope makes an angle of 25.0 ° with the horizontal.

Please provide answers with three significant figures.

a. What are the horizontal and vertical components of the applied force?

b. What is the magnitude of each of the forces?

Applied Force =  

Weight =  

Normal Force =  

Frictional Force=

. How much work is done by each of the forces?

d. What is the total amount of work done on the crate? (Hint: Compare the initial energy and final energy of the crate.)

e. What is the coefficient of friction of the crate on the floor?

A 0.050 kg arrow is launched vertically in the air. The bowstring exerts an average force of 53 N on the arrow over a distance of 0.75 m.

Please provide answers with two significant digits.

a. With what speed does the arrow leave the bow.

b. How high will the arrow travel? Neglect air resistance.

A 263-g object is dropped onto a vertical spring with force constant k = 2.52 N/cm. The object sticks to the spring, and the spring compresses 11.8 cm before coming momentarily to rest. While the spring is being compressed, how much work is done:

a. by the force of gravity?

b. by the spring?

c. What was the speed of the object just before it hit the spring?

d. If this initial speed of the block is doubled, what is the maximum compression of the spring?

A boy with a mass 50.0 kg walks up the stairs from the ground to the top of a spiral water slide in 1.00 minute. The height of the slide is 11.5 m above the ground.

Please provide answers with three significant figures.

a. calculate the following:

(i) the potential energy gained

(ii) the average power developed by the boy in walking up the stairs

b. As the boy slides down the slide and reaches the bottom, his speed is 12.0 m/s and the distance traveled along the slide is 108 m. Consider that there is friction present as the boy slides down.

(i) Find the mechanical energy lost by the boy in sliding down the slide.

(ii) What is the average frictional force acting on the boy?

Thanks

Answer 1

The problem set is too long for a video. So, I will set up the first problem. There are a number of parts to the solution. The full solution should be a student exercise.