Question Text
Question 2 :
Starting from a stationary position, Rahul paddles his bicycle to attain a velocity of 6 $m s^{–1}$ in 30 s. Then he applies brakes such that the velocity of the bicycle comes down to 4 $m s^{-1}$ in the next 5 s. What is the acceleration of the bicycle in both the cases?
Question 3 :
A body is thrown vertically upward with velocity u, the greatest height h to which it will rise is, _____.
Question 4 :
Usha swims in a 90 m long pool. She covers 180 m in one minute by swimming from one end to the other and back along the same straight path. What is the average speed of Usha?
Question 5 :
What does the path of an object look like when it is in uniform motion?
Question 6 :
The brakes applied to a car produce an acceleration of $6 m s^{-2}$ in the opposite direction to the motion. If the car takes 2 s to stop after the application of brakes, What is the distance it travels during this time?
Question 7 :
What is the quantity which is measured by the area occupied below the velocity-time graph?
Question 8 :
Give an example for an object moving with an acceleration but with uniform speed.
Question 9 :
Is it possible to have an object with a constant acceleration but with zero velocity?
Question 10 :
If the athlete takes t seconds to go once around the circular path of radius r, the speed v is given by ?