Name Due Date NAT 114 Homework#2 Applying Newton\'s Laws &Calculating; Energy Ap
ID: 1577400 • Letter: N
Question
Name Due Date NAT 114 Homework#2 Applying Newton's Laws &Calculating; Energy Applying s Laws A 4.0 kg sled with a 21.0 kg passenger is pulled on level snow by a constant horizontal force of 60.0 N. The sled is also experiencing a frictional force of 10.0 N from rubbing against the snow. You may neglect any air resistance. 1. Draw a force diagram of the sled/passenger system showing all forces as arrows acting on the system. a. Calculate the horizontal acceleration of the sled/passenger system by looking at the net force in the horizontal direction. b. Hoizotel cecelevet ion s sleed 2. A large bus and a small compact car collide in an intersection. a. Which vehicle experiences more force from the collision? Explain your answer b. Which experiences more acceleration from the collision? Explain your answer.Explanation / Answer
Given,
m = 4 kg ; M = 21 kg ; Fp = 60 N ; Ff = 10 N
a)Diagram shown is correct
b)The net force will be:
Fnet = Fp - Ff
Fnet = 60 - 10 = 50 N
Fnet = (m + M) a = 50 N
a = 50/(4 + 21) = 2 m/s^2
Hence, a = 2 m/s^2 (u did well)
2)(a)From Newtons third law both the car anf the bus will experience the same force, but in apposite directions.
(b)We know that,
F = ma => a = F/m
So less the mass more will be the acceleration.
Car will have more acceleration.
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