Advertisements
Advertisements
प्रश्न
Which of the quantity-velocity or acceleration-determines the direction of motion?
Advertisements
उत्तर
Velocity determines the direction of motion.
APPEARS IN
संबंधित प्रश्न
Under what condition(s) is the magnitude of average velocity of an object equal to its average speed?
In addition to speed, what else should we know to predict the position of a moving body ?
A train travels the first 15 km at a uniform speed of 30 km/h; the next 75 km at a uniform speed of 50 km/h; and the last 10 km at a uniform speed of 20 km/h. Calculate the average speed for the entire train journey.
A car travels 100 km at a speed of 60 km/h and returns with a speed of 40 km/h. Calculate the average speed for the whole journey.
Arrange the following speeds in increasing order.
10 m s-1, 1 km min-1 and 18 km h-1.
The velocity-time graph of a moving body is given below in Figure

Total displacement.
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.
Define uniform velocity and give one example.
Draw a diagram to show the motion of a body whose speed remains constant, but velocity changes continuously.
A speeding car changes its velocity from 108 kmh−1 to 36 kmh−1 in 4 s. Calculate its deceleration in
- ms−2
- kmh−2.
