Newton's 2nd Law Calculations

1. A 54 kg hiker was walking up a mountain side at an acceleration of 5 m/s2 carrying a 9 kg backpack full of camping gear.

What force did the hiker use on his backpack to carry it up the mountain?

(a)  

2. A toddler was pulling her little sister on a wagon with a force of 10 N.

The toddler was able to pull the wagon at an acceleration of 4 m/s2.

What is the mass of the toddler's sister on the wagon?

(a)  

3. Two college students were moving into their dorm room. They had to

carry a 25 kg box of clothes up a tiny staircase. Both students exerted a force

of 3 N each, pushing the box up the staircase.

What was the acceleration on the box?

(a)  

4. During football practice, a coach was showing his players how to tackle.

He ran and exerted a force of 15 N onto the tackling bag.

Once he made contact he accelerated the bag to 8 m/s2.

What was the mass of the tackling bag?

(a)  

5. A driver was driving their new red 950 kg Jeep down the highway with a

force of 65 N. Driving against an air resistance of 17 N,

What was the acceleration of the Jeep?

(a)  

6. A car pulled over on the side of the road needed to be pulled onto the tow truck.

The truck pulled the car up the ramp with 550 N of force at an acceleration of 5 m/s2.

What is the mass of the car?

(a)  

7. The block below moves on a frictionless surface at 3.2 m/s2.

5N-> [] <-2N

Determine the mass of the block.

(a)  

8. During a game the soccer player kicked the ball toward the goal with a

force of 13 N. The ball has a mass of 0.45 kg.

What was the acceleration of the ball?

(a)  

9. During a lab two students wanted to figure out the force it takes to move an

11.3 kg desk an acceleration of 0.2 m/s2

What is the force it takes to move an 11.3 kg desk?

(a)  

10. How much force would it take to move a 20 kg box up a ramp with an

acceleration of 9 m/s2?

(a)