Advertisements
Advertisements
Question
Draw a diagram to show the motion of a body whose speed remains constant, but velocity changes continuously.
Advertisements
Solution
A body moving in a circle with constant speed but variable velocity as the velocity of the body at any point is along the tangent to the circle at that point as shown in the figure.

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.
The speed of a moving object is determined to be 0.06 m/s. This speed is equal to :
A car travels the first 30 km with a uniform speed of 60 km h−1 and the next 30 km with a uniform speed of 40 km h−1. Calculate :
- The total time of journey,
- The average speed of the car.
For the motion with uniform velocity , how is the distance travelled related to the time ?
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.
A train is moving with a velocity of 90 km h-1 . It is brought to stop by applying the brakes which produce a retardation of 0.5 ms-2 Find :
(i) The velocity after 10 s , and
(ii) the time taken by the train to come to rest .
Define average velocity and give one example.
Derive th e equation of motion.
S = ut+ `1/2` at2,
Where the symbols have their usual meanings
A motorcyclist drives from A to B with a uniform speed of 30 km h–1 and returns back with a speed of 20 km h–1. Find its average speed.
