Direction: Complete all work in your notebook. Be prepared to present your work in class. Show all your work.
CALCULATING FORCE WORKSHEET 1
(Newton’s 2nd Law)
Calculate the force in the following problems by using the equation:
Force = mass x acceleration F = m a
Be sure to (1) ALWAYS write the equation
(2)plug in the numbers and units,
(3) give the answer with the correct units.
- A man hits a golf ball (0.2 kg) which accelerates at a rate of 20 m/s2. What amount
of force acted on the ball?
- You give a shopping cart a shove down the isle. The cart is full of groceries and
has a mass of 18 kg. The cart accelerates at a rate of 3 m/s2. How much force did
you exert on the cart?
- The wind pushes a paper cup along the sand at a beach. The cup has a mass of 0.025 kg and accelerates at a rate of 5 m/s2. How much force is the wind exerting on the cup?
- You push a friend sitting on a swing. She has a mass of 50 kg and accelerates at a
rate of 4 m/s2. Find the force you exerted.
- How much force would it take to push another, larger friend who has a mass of 70
kg to accelerate at the same rate of 4 m/s2?
- A worker drops his hammer off the roof of a house. The hammer has a mass of 9
kg, and gravity accelerates it at the usual 9.8 m/s2. How much force does the earth
apply to the hammer?
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CALCULATING FORCE WORKSHEET 2
Formulas to use:
F = M x A M = F/A A = F/M
W = M x G M = W/G G = W/M
ANSWER ALL QUESTIONS & SHOW ALL WORK
- How much force is needed to accelerate a 66 kg skier at 2 m/sec2?
- What is the force on a 1000 kg elevator that is falling freely at 9.8 m/sec2?
- What is the acceleration of a 50 kg object pushed with a force of 500 newtons?
- The mass of a large car is 1000 kg. How much force would be required to accelerate the car at a rate of 3 m/sec2?
- A 50 kg skater pushed by a friend accelerates 5 m/sec2. How much force did the friend apply?
- A force of 250 N is applied to an object that accelerates at a rate of 5 m/sec2. What is the mass of the object?
- A bowling ball rolled with a force of 15 N accelerates at a rate of 3 m/sec2; a second ball rolled with the same force accelerates 4 m/sec2. What are the masses of the two balls?
- If a 60 kg person on a 15 kg sled is pushed with a force of 300 N, what will be person’s
acceleration?
- A force of 20 N acts upon a 5 kg block. Calculate the acceleration of the object.
- An object of mass 300 kg is observed to accelerate at the rate of 4 m/s2. Calculate the force required to produce this acceleration.
- A 5 kg block is pulled across a table by a horizontal force of 40 N with a frictional force of 8 N opposing the motion. Calculate the acceleration of the object.
- An object of mass 30 kg is in free fall in a vacuum where there is no air resistance. Determine the acceleration of the object.
- An object of mass 30 kg is falling in air and experiences a force due to air resistance of 50 newtons. a) Determine the net force acting on the object and b) Calculate the acceleration of the object.
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CALCULATING FORCE WORKSHEET 3
Fill in the data table below and show all work needed to find missing variable.
1.Use correct formula
2.Substitute numbers
3.Solve problem
4.Correct label
Formulas to use:
F = M x A M = F/A A = F/M
W = M x G M = W/G G = W/M
| Force | Mass | Acceleration | Show all work here |
| 150 N | 6 kg | ||
| 12 kg | 18 m/sec | ||
| 744 N | 24 m/sec | ||
| 480 N | 15 kg | ||
| 73 kg | 95 m/sec |
| Weight | Mass | Acceleration | Show all work here |
| 245N | 9.8 m/sec | ||
| .5 kg | 9.8 m/sec | ||
| 151.9 N | 9.8 m/sec | ||
| 12 kg | 9.8 m/sec | ||
| 539 N | 55 kg |
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CALCULATING FORCE WORKSHEET 4
ANSWER ALL QUESTIONS & SHOW ALL WORK
1.Use correct formula
2.Substitute numbers
3.Solve problem
4.Correct label
Formulas to use:
F = M x A M = F/A A = F/M
W = M x G M = W/G G = W/M
- A force of 64 N is applied to an 8 kg. Mass. What is the acceleration of the mass?
- A 7 kg. Mass is moved across table at 25 m/sec. What force caused the acceleration?
- What force is needed to accelerate a 40 kg. Mass across a surface at 7.5 m/sec?
- A force of 125 N is applied to a 50 kg. Mass. What is the acceleration of the mass?
- A 147 N iron ball weighs 15 kg. What is the acceleration of the ball due to gravity?