Advertisements
Advertisements
प्रश्न
When is instantaneous speed the same as the average speed?
Advertisements
उत्तर
Instantaneous velocity is equal to average velocity if the body is in uniform motion.
APPEARS IN
संबंधित प्रश्न
Suppose the two photographs, shown in Figure 1 and Figure 2, had been taken at an interval of 10 seconds. If a distance of 100 metres is shown by 1 cm in these photographs, calculate the speed of the fastest car.
Figure 1 Vehicles moving in the same direction on a road
Figure 2 Position of vehicles shown in Figure 1 after some time
Do speed and average speed of a body have the same meaning?
Does uniform speed mean constant speed?
The average time taken by a normal person to react to an emergency is one fifteenth of a second and is called the 'reaction time'. If a bus is moving with a velocity of 60 km/h and its driver sees a child running across the road, how much distance would the bus had moved before he could press the brakes? The reaction time of the people increases when they are intoxicated. How much distance had the bus moved if the reaction time of the driver were 1/2 s under the influence of alcohol?
The correct relation among the following is
A vehicle covers a distance of 400km in 5 hours. Calculate its speed.
The time period of a given pendulum is constant.
A bus travels, a distance of 20 km from Chennai central to the airport in 45 minutes. What is the average speed?
Which of the quantities have the same SI unit?
Abus from Chennai travels to Trichy passes loo km, 160 km at 10.15 am, 11.15 am respectively. Find the average speed of the bus during 10.15 – 11.15 am.
