Newton’s laws worksheet with answers

Free printable Newton’s laws worksheet: 6 problems from easy to exam level, with an answer key. Print it or save it as a PDF.

New worksheetPractise online with hints

For teachers: free to print, copy and use in class. Every new worksheet has new values and its own answer key. A link to ExamProblems on your course page is appreciated.

Name: ____________________   Date: ____________

1.Easy
m = 22 kgF = 125 Nμ = 0.4a = ?

A 22 kg crate is pushed across a floor with a horizontal force of 125 N. The coefficient of kinetic friction is 0.4. Use g = 9.81 m/s². Find the acceleration a of the crate.

m = 22 kgF = 125 Nμ = 0.4g = 9.81 m/s²
a = m/s²
2.Easy
m = 28 kgF = 110 Nμ = 0.25a = ?

A 28 kg crate is pushed across a floor with a horizontal force of 110 N. The coefficient of kinetic friction is 0.25. Use g = 9.81 m/s². Find the acceleration a of the crate.

m = 28 kgF = 110 Nμ = 0.25g = 9.81 m/s²
a = m/s²
3.Medium
boxv₀ = 5.5 m/sμ = ?

A box slides across a level floor with an initial speed of 5.5 m/s and comes to rest after 6.2 m. Use g = 9.81 m/s². Find the coefficient of kinetic friction μ.

v₀ = 5.5 m/sd = 6.2 mg = 9.81 m/s²
μ =
4.Medium
θ = 15°30 kgF = ?

A 30 kg box is pushed up a ramp at 15° to the horizontal at constant speed, by a force parallel to the ramp. The coefficient of kinetic friction is 0.25. Use g = 9.81 m/s². Find the pushing force F.

m = 30 kgθ = 15°μ = 0.25g = 9.81 m/s²
F = N
5.Hard
θ = 15°blockv₀ = 8.5 m/s

A block is given a push so that it starts sliding up a ramp at 15° with a speed of 8.5 m/s. The coefficient of kinetic friction is 0.25. Use g = 9.81 m/s². How far d along the ramp does it slide before it stops?

v₀ = 8.5 m/sθ = 15°μ = 0.25g = 9.81 m/s²
d = m
6.Hard
m1​ = 2 kg1 kgμ = 0.3

A 2 kg block on a horizontal table is connected by a light string over a frictionless pulley to a hanging 1 kg mass. The coefficient of kinetic friction between block and table is 0.3. Use g = 9.81 m/s². Find the tension T in the string.

m1 = 2 kgm2 = 1 kgμ = 0.3g = 9.81 m/s²
T = N

Answer key

  1. 1. a = 1.758 m/s²
  2. 2. a = 1.476 m/s²
  3. 3. μ = 0.2487
  4. 4. F = 147.2 N
  5. 5. d = 7.361 m
  6. 6. T = 8.502 N

Full step-by-step solutions: practise this topic on examproblems.com.