Advertisements
Advertisements
Question
An object of mass 16 kg is moving with an acceleration of 3 m/s2. Calculate the applied force. If the same force is applied to an object of mass 24 kg, how much will be the acceleration?
Advertisements
Solution
Given: m1 = 16 kg, a1 = 3 m/s2, m2 = 24 kg
Find: a2 = ?, F = ?
Applied force, F = m1a1 = 16 kg × 3 m/s2 = 48 N
∴ F = m2a2
∴ Acceleration, `"a"_2 = "F"/"m"_2`
`= (48 "N")/(24 "kg")`
= 2 m/s2
APPEARS IN
RELATED QUESTIONS
The unit of retardation is ____________
The velocity-time graph for a uniformly retarded body is a straight line inclined to the time axis with an obtuse angle. How is retardation calculated from the velocity-time graph?
Figure given below shows a velocity-time graph for a car starting from rest. The graph has three parts AB, BC and CD.
Which part of graph shows motion with uniform
(a) velocity (b) acceleration (c) retardation ?
A car travels with uniform velocity of 25 m s-1 for 5 s. The brakes are then applied and the car is uniformly retarded and comes to rest in further 10 s. Find:
- The distance which the car travels before the brakes are applied,
- Retardation and
- The distance travelled by car after applying the brakes.
Draw velocity – time graph for the following situation:
When a body is moving with variable velocity, but uniform retardation.
Diagram is given below shows velocity – time graph of car P and Q, starting from the same place and in the same direction. Calculate the Acceleration of car Q between 2 s – 5 s.
A cyclist driving at 5 ms−1, picks a velocity of 10 ms−1, over a distance of 50 m. Calculate
- acceleration
- time in which the cyclist picks up above velocity.
A motor bike running at 5 ms−1, picks up a velocity of 30 ms−1 in 5s. Calculate
- acceleration
- distance covered during acceleration.
A body falls towards the earth. Does it have positive or negative acceleration?
The speed of a car increases from 10 km/h to 64 km/h in 10 seconds. What will be its acceleration?
Out of energy and acceleration, which one is a vector?
Convert the following acceleration:
1/36 m/s2 into km/h2
The graph shows how the velocity of a scooter varies with time in 50 s.
Work out: Acceleration.
Correct your friend who says that acceleration gives the idea of how fast the position changes.
The Unit of acceleration is ______.
The speed of a particle is constant. Will it have acceleration? Justify with an example.
m/s2 is the unit of ______.
Acceleration is defined as the rate of change of ______.
If a body starts from rest, what can be said about the acceleration of the body?
It is possible to have objects moving with uniform speed but variable acceleration.
