Advertisements
Advertisements
Question
From the diagram given below, calculate acceleration.
Advertisements
Solution
Acceleration = Slope of v.t. graph from O to A
= `"AC"/"OC"=15/10` = 1.5 m/s2
APPEARS IN
RELATED QUESTIONS
Figure given below shows a velocity-time graph for a car starting from rest. The graph has three parts AB, BC and CD.
(a) Is the magnitude of acceleration higher or lower than that of retardation ? Give a reason .
(b) Compare the magnitude of acceleration and retardation .
A motorbike, initially at rest, picks up a velocity of 72 kmh−1 over a distance of 40 m. Calculate
- acceleration
- time in which it picks up above velocity.
The acceleration of a body is 8.5 ms-2. What does this statement mean?
A car traveling at 60 km/h, stops on applying brakes in 10 seconds. What is its acceleration?
Correct your friend who says that acceleration gives the idea of how fast the position changes.
What do you mean by constant acceleration?
Exercise Problem.
A racing car has a uniform acceleration of 4 ms–2. What distance it covers in 10 s after the start?
An object can be moving with uniform speed but with variable acceleration.
Assertion: When a body is subjected to a uniform acceleration, it is always moving in a straight line.
Reason: Motion may be straight-line motion or circular motion.
