As a stunt for movie two cars are to collide with each other head on. The two cars are initially 125 apart. Car A is heading straight for car B at 30 m/s and car B is at rest. Car A maintain the same velocity, while car B accelerates toward car A at constant 4 m/s2.
(a) Find out the time when do the car collide
(b) Where do the cards collides?
(c) How fast the car B moving at the moment of collision?
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Ответ:
3.39724 seconds
23.0824792352 m, 101.917520765 m
13.58896 m/s
Explanation:
t = Time taken
u = Initial velocity
v = Final velocity
s = Displacement
a = Acceleration
The equation of motion will be
The time at which the cars collide is 3.39724 seconds
Car B traveled 23.0824792352 m and Car A traveled 125-23.0824792352 = 101.917520765 m
The speed of car B is 13.58896 m/s
Ответ: