Answer:
D. 128.25 N
Explanation:
The force exerted on an object and the acceleration of the object are related by the following equation (Newton's second law):
where
F is the force exerted on the object
m is the mass of the object
a is the acceleration
In this problem, we know:
- The mass of the object: m = 13.5 kg
- The acceleration: a = 9.5 m/s^2
Therefore, we can find the force required to give the object this acceleration:
The initial velocity is 0.65 m/s
Explanation:
The motion of the roller coaster is a uniformly accelerated motion, so we can solve the problem by using the following suvat equation:
where
s is the displacement
u is the initial velocity
v is the final velocity
t is the time
For the roller coaster in this problem:
v = 35 m/s
t = 2.3 s
s = 41 m
Solving the equation for u, we find the initial velocity:
Learn more about accelerated motion:
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Answer:
I hopes it helps
thank you
