Question

Newton's second law states that F = m x a (Force is mass times acceleration). Which example would have the GREATEST acceleration? (Hint: You need to do calculations for these!)
A) a 10 kg ball thrown with a 50 Newton force
B) a 1 kg ball thrown with a 0.5 Newton force
C) a 50 kg student launched by a 100 Newton catapult
D) a 500 kg car accelerated by 1000 Newtons from the engine

A 3 kg lunch box is pushed across the lunch table. The acceleration of the lunch box is 2.0 m/s2. What was the net force applied to the lunch box? (Hint: F = ma) Show all your work!


Find the weight of a 10 kg rock. Remember, acceleration due to gravity is -9.8 m/s2. (Hint: w = mg) Show all your work!


A 3 kg lunch box is pushed across the lunch table. The acceleration of the lunch box is 2.0 m/s2. What was the net force applied to the lunch box? (Hint: F = ma) Show all your work!

Answer 1

With these problems you can literally just plug in the numbers.

A) 50 = 10 * a
B) 0.5 = 1 * a
C) 100 = 50 * a
D) 1000 = 500 * a

F = 3kg * 2m/s^2
W = 10kg * 9.8m/s^2