Advertisements
Advertisements
प्रश्न
Express the following in m s-1.
18 km min-1
Advertisements
उत्तर
18 km min-1
1 km = 1000 m
1 min = 60 s
∴ 18 km min-1 = `18 xx 1000/60` = 300 ms-1
APPEARS IN
संबंधित प्रश्न
What does the path of an object look like when it is in uniform motion?
What do the following measure in a car ?
(a) Speedometer (b) Odometer
Write the formula for acceleration. Give the meaning of each symbol which occurs in it.
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 is moving along a straight road at a steady speed. It travels 150 m in 5 seconds:
How far does it travel in 6 seconds ?
The speed of a car is 72 km h-1. Express it in m s-1.
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.
A car moving on a straight path covers a distance of 1 km due east in 100 s. What is velocity of the car?
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.
