Advertisements
Advertisements
Question
A motorcyclist starts from rest and reaches a speed of 6 m/s after travelling with uniform acceleration for 3 s. What is his acceleration ?
Advertisements
Solution
We have to find the value of uniform acceleration.
Initial velocity (u) = 0 m/s
Final velocity (v) = 6 m/s
Time taken (t) = 3s
Acceleration:
`a = (v-u)/t`
Put the values in the above equation to obtain the value of acceleration .
`a = (6-0)/3`
= `2 "m/s"^2`
APPEARS IN
RELATED QUESTIONS
Bus X travels a distance of 360 km in 5 hours whereas bus Y travels a distance of 476 km in 7 hours. Which
bus travels faster ?
If a sprinter runs a distance of 100 metres in 9.83 seconds, calculate his average speed in km/h.
Give one example of a motion where an object does not change its speed but its direction of motion changes continuously.
Which of the following can sometimes be 'zero' for a moving body?
(i) average velocity
(ii) distance travelled
(iii) average speed
(iv) displacement
When is a body said to be in motion?
Draw the shape of the velocity-time graph for a body moving with (a) Uniform velocity and (b) Uniform acceleration.
A train travels with a speed of 60 km h-1 from station A to station B and then comes back with a speed 80 km h-1 from station B to station A. Find -
- The average speed
- The average velocity of the train.
Define average velocity and give one example.
Write down the type of motion of a body along with the A – O – B of the following distance – time graph.

Define speed of a body.
