1) According to Newton's Second Law how do we calculate the force acting on an object? a) force = mass x accerleration b) force = mass divided by acceleration c) force = mass + acceleration d) force = mass - acceleration 2) You are moving to a new house. How much force is required to accelerate your 30 kg table at 1.5 m/s2? a) 15 N b) 45 N c) 31.5 N d) 30 N 3) Calculate the net force force required to accelerate a 2 kg football 40 m/s2. a) 42 N b) 20 N c) 80 N d) 38 N 4) Calculate the net force needed to accelerate a 300 kg boulder 5 m/s2. a) 150 N b) 1500 grams c) 1500 N d) 3005 N 5) You are about to ride your bike to basketball practice. You're running late, what could you do to get to practice faster (accelerate more)? a) Decrease the mass of the bike by emptying out the stuff in the bike's basket. b) Add more stuff to the basket to increase inertia c) Increase the force on the bike by pedaling faster. d) A and C e) A and B 6) A 6 kg toy car accelerates 3 m/s2. How strong was the force of the car's engine? a) 2 N b) 3 N c) 9 N d) 18 N 7) You're pushing a full grocery cart at a rate of 3 m/s2. The mass of the full cart is 25 kg. How much force are you using? a) 75 N b) 100 N c) 28 N d) 125 N 8) Compare a bowling ball to a tennis ball. Why is the bowling ball more difficult to move? a) The bowling ball has LESS mass b) The bowling ball has MORE mass c) The tennis ball has MORE mass d) This is a trick question 9) How much force is needed to accelerate your 5 kg bowling ball to a rate of 10 m/s2? a) 50 N b) 5 N c) 15 N d) 500 N 10) In the last question, you applied a 50 N force to your bowling ball. You borrow someone's bowling ball that is twice as massive as yours. How much force does it take to make this bowling ball roll at the same acceleration? a) 50 N b) 25 N c) 100 N d) need more information.

Newton's Second Law (f = ma calculations)

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