colum $I$ | colum $II$ |
$(A)$ Constant positive acceleration | $(p)$ Speed may increase |
$(B)$ Constant negative acceleration | $(q)$ Speed may decrease |
$(C)$ Constant displacement | $(r)$ Speed is zero |
$(D)$ Constant slope of $a-t$ graph | $(s)$ Speed must increase |
A person sitting in a moving train with his face towards the engine, throws a coin vertically upwards. The coin falls ahead of person. The train:
A ball is dropped and its displacement versus time graph is as shown (Displacement $x$ from ground and all quantities are positive upwards).
$(a)$ Plot qualitatively velocity versus time graph.
$(b)$ Plot qualitatively acceleration versus time graph.
Acceleration-time graph of a body is shown. The corresponding velocity-time graph of the same body is
The relation between time ' $t$ ' and distance ' $x$ ' is $t=$ $\alpha x^2+\beta x$, where $\alpha$ and $\beta$ are constants. The relation between acceleration $(a)$ and velocity $(v)$ is: