Train Car A Has A Mass Of 1947 Kg And Is Travelling With Velocity 4 9 M S It Collides With A Stationary Train Car B Af 1 (102.23 KiB) Viewed 46 times
Train car A has a mass of 1947 kg and is travelling with velocity 4.9 m/s. It collides with a stationary train car B, after which the two cars couple together and move along at 1.5 m/s. What is the mass of train car B? Units for answer: kg (2 marks) Positive A B
= = A particle undergoes motion in polar coordinates given by r = 2 sin 0 metres, and 0 = 0.3 rad/s. Find the acceleration of the particle in the radial direction when 0 = 1/2 rad. Units for answer: m/s2 (2 marks)
A ball of mass 0.3 kg is released from rest from a height 7 metres. The ball bounces off the ground, and return to half the height from which it was dropped. Find the coefficient of restitution between the ball and the ground. Units for answer: none (2 marks) Answer:
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