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Worksheet: Forces and Newton's Second Law of Motion


Your -kg sports car accelerates from 0 to 30 m/s in 10 s. What average force is exerted on it during this acceleration?

  • A N
  • B N
  • C N
  • D N
  • E N


A car with a mass of kg applies brakes when it is moving at 90.0 km/h, and the car comes to rest after travelling 40.0 m. What is the net force on the car during its deceleration?


Find the magnitude of the net force required to bring a car to rest if the mass of the car is kg, its initial speed is 40.0 km/h, and its stopping distance is 25.0 m.


A baseball catcher is performing a stunt for a television commercial. He will catch a baseball (mass 145 g) dropped from a height of 60.0 m above his glove. His glove stops the ball in 0.0100 s. What is the force exerted by his glove on the ball?


A baby dolphin of mass 35.0 kg decelerates from a horizontal speed of 12.0 m/s to a horizontal speed of 7.50 m/s, taking 2.30 s. What average force is exerted to slow the dolphin?


The rocket sled shown in the accompanying diagram has a mass of kg. The sled decelerates at a rate of 196 m/s2. What force is necessary to produce this deceleration? Assume that the rockets have finished firing when the deceleration begins.


A particle of mass 2.0 kg is acted on by a single force .

What is the particle’s acceleration?

  • A
  • B
  • C
  • D
  • E

If the particle starts at rest, how far does it travel in the first 5.0 s?


A cleaner pushes a laundry cart of mass 6.30 kg. The cleaner pushes with a net external force of 53.4 N. Calculate the magnitude of the cart’s acceleration.


A cart with a mass of 18 kg is at rest on a level floor. A constant 15-N force is applied to the cart at an angle below the horizontal. If friction is negligible, what is the speed of the cart when the force is applied over a distance 6.7 m?