Advertisements
Advertisements
Question
A car is moving along a straight road at a steady speed. It travels 150 m in 5 seconds:
What is its average speed ?
Advertisements
Solution
We have :
Distance (d) = 150 m
Time (t) = 5s
So, we can calculate average the speed as :
Avearge Speed = `" Total distance travelled"/"time"`
Average Speed for the entire journey :
= `150/5`
= 30 m/s
APPEARS IN
RELATED QUESTIONS
What name is given to the speed in a specified direction ?
What is the SI unit of retardation ?
If a bus travelling at 20 m/s is subjected to a steady deceleration of 5 m/s2, how long will it take to come to rest ?
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.
Which of the following could not be a unit of speed?
Which of the quantity-velocity or acceleration-determines the direction of motion?
The speed of a car is 72 km h-1. Express it in m s-1.
A car moving on a straight path covers a distance of 1 km due east in 100 s. What is the speed of the car?
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?
Distinguish between speed and velocity.
