What is meant by uniform motion ? Can you think of an example of a body in uniforim motion ?
What is meant by uniform motion ? Can you think of an example of a body in uniforim motion ?
A body has a uniform motion, if if thavels equal distances in equal intervals of time. no mattor how small these time intervals mav be example, a car running at constant speed of say, $10$ metres per second, will cover equal distances of $10$ metres, every second, so its motion will be uniform. The distance$-$time graph for uniform motion is a straight line.
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Name the physical quantity which corresponds to the rate of change of momentum.
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An electron moving with a velocity of $5 \times 10^{4}\, ms ^{-1}$ enters into a uniform electric field and acquires a uniform acceleration of $10^{4}\, ms ^{-2}$ in the direction of its initial motion.
$(i)$ Calculate the time in which the electron would acquire a velocity double of its initial velocity.
$(ii)$ How much distance the electron would cover in this time ?
An electron moving with a velocity of $5 \times 10^{4}\, ms ^{-1}$ enters into a uniform electric field and acquires a uniform acceleration of $10^{4}\, ms ^{-2}$ in the direction of its initial motion.
$(i)$ Calculate the time in which the electron would acquire a velocity double of its initial velocity.
$(ii)$ How much distance the electron would cover in this time ?
Two cars $A$ and $B$ have their displacement$-$time graph as given below. Which car has a greater velocity ?
Two cars $A$ and $B$ have their displacement$-$time graph as given below. Which car has a greater velocity ?
The distance$-$time graph of a body is parallel to time axis. The body is
The distance$-$time graph of a body is parallel to time axis. The body is