Advertisements
Advertisements
Question
Write three equations of uniformly accelerated motion relating the initial velocity (u), final velocity (v), time (t), acceleration (a) and displacement (S).
Solution
Three equations of a uniformly accelerated motion are
v = u + at
s = ut + (1/2)at2
v2 = u2 + 2as
APPEARS IN
RELATED QUESTIONS
What term is used to denote the change of velocity with time ?
Define velocity. What is the SI unit of velocity ?
Define velocity. State its unit.
Differentiate between uniform acceleration and variable acceleration.
A car starting from rest acquires a velocity 180m s-1 in 0.05 h. Find the acceleration.
A bicycle initially moving with a velocity 5.0 m s-1 accelerates for 5 s at a rate of 2 m s-2. What will be its final velocity?
State how the velocity-time graph can be used to find
The acceleration of a body
Derive the following equations for uniformly accelerated motion:
(i) v = u + at
(ii) `"S = ut" + 1/2 "at"^2`
(iii) v2 = u2 + 2aS
where the symbols have their usual meanings.
Multiple choice Question. Select the correct option.
At the maximum height, a body thrown vertically upwards has :
A packet is dropped from a stationary helicopter, hovering at a height ‘h’ from ground level, reaches the ground in 12s. Calculate
- the value of h
- final velocity of packet on reaching the ground. (Take g = 9.8 ms−2)