An observer moves with a constant speed along the line joining two stationary objects. He will observe that the two objects
have the same speed
have the same velocity
move in the same direction
All of the above
A body lying initially at point $(3,7)$ starts moving with a constant acceleration of $4 \hat{i}$. Its position after $3 \,s$ is given by the co-ordinates ..........
A particle is moving with velocity $\vec v = K(y\hat i + x\hat j)$ where $K$ is a constant. The general equation for its path is
Velocity-time graph for a car is semicircle as shown here. Which of the following is correct :
A vector has magnitude and direction. Does it have a location in space ? Can it vary with time ? Will two equal vectors $a$ and $b$ at different locations in space necessarily have identical physical effects ? Give examples in support of your answer.