1.
Which of the following will affect the inertia of an object?
2.
The figure below shows a 400 m track at a school. An athlete runs two complete laps, starting and ending on the same spot in the track. What is the respective distance and displacement travelled by the athlete?
3.
A large oil tanker must retract its engine in order to slow its movement a few miles before it can be stopped. Why is the oil tanker difficult to stop?
4.
A coconut takes 2.20 s to fall from the tree to the ground. What is the height of the coconut tree? [Acceleration of gravity = 9.81 m s-2]
5.
A crumple zone on the front of the car is important for the safety of the driver and passenger because it can reduce