1. A bicycle and rider with a combined mass of 115 kg are traveling at a speed of 8 m/s. What is the kinetic energy of the bicycle and rider?
Answers
Answer:
3680 J
Explanation:
The kinetic energy of an object is given by:
where
m is the mass of the object
v is the speed of the object
In this problem, we have
m = 115 kg is the combined mass of the bycicle and the rider
v = 8 m/s is the speed
Substituting numbers into the formula, we find
Answer:
3680 J
Explanation:
The kinetic energy of an object is given by:
where
m is the mass of the object
v is the speed of the object
In this problem, we have
m = 115 kg is the combined mass of the bycicle and the rider
v = 8 m/s is the speed
Substituting numbers into the formula, we find
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Apply this kinematics equation for the particle's vertical motion:
D = Vt + 0.5At²
D = vertical distance traveled, t = time, V = initial vertical velocity, A = vertical acceleration
Given values:
D = 49m
V = 34.3m/s
A = -9.81m/s²
Plug in and solve for t:
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