Advertisements
Advertisements
प्रश्न
The velocity-time graph of a moving body is given below in Figure

The acceleration in parts AB, BC and CD.
Advertisements
उत्तर
Acceleration in the part AB = Slope of AB
= tan (∠BAD)
= (30/4) ms-2
= 7.5 ms-2
Acceleration in the part BC = 0 ms-2
Acceleration in the part CD = slope of CD = -tan (∠CDA)
= -(30/2) ms-2
= -15 ms-2
APPEARS IN
संबंधित प्रश्न
Under what condition(s) is the magnitude of average velocity of an object equal to its average speed?
Change the speed of 6 m/s into km/h.
Under which condition is the magnitude of average velocity equal to average speed ?
A tortoise moves a distance of 100 metres in 15 minutes. What is the average speed of tortoise in km/h ?
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 ?
Give one example of a motion where an object does not change its speed but its direction of motion changes continuously.
A train starting from rest moves with a uniform acceleration of 0.2 m/s2 for 5 minutes. Calculate the speed acquired and the distance travelled in this time.
Give one example of following motion :
Variable velocity
A car is moving with a velocity 20 m s-1. The brakes are applied to retard it at a rate of 2 m s-2. What will be the velocity after 5 s of applying the brakes?
A body moves from rest with uniform acceleration and travels 270 m in 3 s. Find the velocity of the body at 10 s after the start.
