Is it possible to have two-dimensional motion with acceleration in only one dimension?

State whether any body with a two-dimensional motion may have an acceleration in one dimension only.

What is the dimension of angular acceleration?

Position-time graph for motion with zero acceleration is

Is it possible for a body to have inertia but no weight ?

Define acceleration. What are its units and dimension?

The number of two dimensional lattice is-

State in each case if the motion is one two or three dimensional. A train accelerating on a long straight track

Draw the velocity time graph for motion with constant acceleration having following conditions, Motion in positive direction with positive acceleration.

Read each statement below carefully and state with reasons and examples, if it is true or false , A particle in one-dimensional motion (a) with zero speed at an instant may have non-zero acceleration at that instant (b) with zero speed may have non-zero velocity, (c) with constant speed must have zero acceleration, (d) with positive value of acceleration must be speeding up.