Both the magnitude and the direction of the acceleration of a body are constant. Will the path of body be necessarily a straight line ?

The direction of angular acceleration of a body moving in a circle in the plane of the paper is .

Can the direction of velcity of a body change, when accleration is constant?

If the acceleration of a particle remains constant in magnitude but not in direction, is its path necessarily a straight line or a circle ?

A vector has both magnitude and direction. Does that mean anything that has magnitude and direction is necessarily a vector ? The rotation of a body can specified by the direction of the axis of rotation and the angle of rotation about the axis. Does the make any rotation a vector ?

Assertion: When a person walks on a rough surface, the frictional force exerted by the surface on the person is opposite to the direction of tendenc of motion his leg. Reason: If a body moves with constant velocity, then it means that body is moving along straight line & there is no acceleration.

If a constant torque acts on a body, the body?

Assertion: In projectile motion, the acceleration is constant in both magnitude and direction but the velocity changes in both magnitude and direction. Reason: When a force or accelration is acting in an oblique direction to the direction of velocity then both magnitude and direction of the velocity may be changed.

A body is moving with a velocity 5m//s along a striaght line.A force of 10N is applied to the body perpendicular to the line of motion. If the body is of mass 2kg, then the acceleration of the body along the initial straight line of motion is :

The acceleration produced in a body by a force of given magnitude depends on

Figure shows the velocity and acceleration of a point line body at the initial moment of its motion. The acceleration vector of the body remains constant. The minimum radius of curvature of trajectory of the body is