Today we are practicing Newton's 2nd Law. Please show your work and write the answer to the following questions on a blank piece of paper.
Name _________________ Period 2______________
NEWTON'S SECOND LAW - F=ma
1. A shopping cart is pushed by a little girl. The acceleration of the shopping cart is 4 m/s2. The shopping cart is empty and has a mass of 1 kg. What force did the girl push the cart with?
2. The girl decides to buy lots of ice cream. The mass of the cart increases, and it now has a mass of 5 kg. The cart accelerates at 4 m/s2. What force did the girl push the cart with?
3. The girl’s mom makes her put most of the ice cream back. The cart now weighs 2 kg. The girl again pushes it, and it accelerates at 4 m/s2. What force did the girl put on the cart?
4. Jennifer kicks a soccer ball (1 kg) with a force of 20 Newtons. What is the acceleration of the ball?
5. Lizbeth kicks a soccer ball (1 kg) with a force of 30 Newtons. What is the acceleration of the ball?
6. Brian hits a baseball (0.5 kg) with a force of 20 Newtons. What is the acceleration of the ball?
7. Jorge throws a baseball (0.5 kg) with a force of 10 Newtons. What is the acceleration of the ball?
8. Steve Nash is shooting a free throw. He applies 16 Newtons of force on a basketball that weighs 2 kg. What is the acceleration of the ball?
9. Sponge Bob is on a gameshow and has to decide which challenge to complete: Challenge A, where he has to pull a wagon of 40 kg to an acceleration of 5 m/s2, or Challenge B, where he has to pull a wagon of 20 kg to an acceleration of 7 m/s2. Which challenge will be easier for Sponge Bob to complete? Why?
10. What is the mass of a pickup truck if a tow truck pulls it with a force of 4200 Newtons and it accelerates 7 m/s2?
11. What is the mass of a boxing bag if Jorge kicks it with a force of 100 Newtons and it accelerates 12.5 m/s2?
12. What is the mass of a stroller if a little girl pushes it with a force of 10 Newtons and it accelerates 4 m/s2?
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