Answer:
speed = 65.7 km/h
Explanation:
speed = distance over time, so you'd do 460 km/7 hrs to get your speed in km/h
The answer is D because instantaneous means at a particular point in time
Answer:
60/90
Explanation:
I think because the train's highest velocity is 60 n the time is 90
The solution for this problem is:
Let u denote speed.
Equating momentum before and after collision:
= 0.060 * 40 = (1.5 + 0.060) u
= 2.4 = 1.56 u
= 2.4 / 1.56 = 1.56 u / 1.56
= 1.6 m / s is the answer for this question. This is the speed after the collision.