Question

3. While playing Mario Kart you are losing to your friend at Baby Park, luckily you get a red and green shell. To do the most damage you want to hit them with a lot of momentum. (a) If the red shell is 5 kg and moves at 9 m/s, while the green shell is 3 kg and moves at 17 m/s, which shell should you use? (b) Instead of the shell hitting, your friend throws a red shell behind them so that within a 0.5 seconds your shell comes to a complete stop. How much force does your shell have?

Answer 1

a)

Answer:

Explanation:

a) We want to pick the ball with the greatest momentum. Recall, the formula for calculating momentum is expressed as

Momentum = mv

where

m is the mass of the shell

v is the velocity of the shell

Considering the red shell,

mass = 5

velocity = 9

Momentum of red shell = 5 x 9 = 45 kgm/s

Considering the green shell,

mass = 3

velocity = 17

Momentum of green shell = 3 x 17 = 51 kgm/s

He should use the green shell because it greater momentum