The length of the seconds hand in a wall clock is 10 cm. The magnitude of velocity and acceleration of its tip are
A particle is moving eastward with a velocity of 5 m/s.In 10s, the velocity of the particle changes to 5m/s northward.The average acceleration in this time is:
a) 1/√2 m/s²
b) 1/√2 m/s²
c) 1/2 m/s²
A cheetah starts from rest and accelerates with 2ms2 for 10 seconds. What is its velocity after 10 seconds?
When a body moving with a speed of 20 m/s. stops in 20 seconds, what is the acceleration?