Unit 5 MCQ Bank

For translational particle motion, the net force relation is:

The net work done on a particle between two positions equals:

Impulse delivered to a particle is equal to:

The coefficient of restitution e is defined as:

For a perfectly elastic impact, the coefficient of restitution is:

In a perfectly plastic collision, the two bodies after impact:

During a short-duration impact between bodies, linear momentum is commonly conserved because:

In an inelastic collision, kinetic energy is:

If a block moves along a rough horizontal surface, the work done by the normal reaction is:

When friction opposes the motion of a body, the work done by friction is:

The elastic potential energy stored in a linear spring compressed or stretched by x is:

For a block on an incline of angle θ, the component of weight acting down the plane is:

If no other force has a component normal to the plane, the normal reaction on a block on an incline is based on:

If a block is moving up a rough incline, the friction force on the block acts:

If a block is sliding down a rough incline, friction on the block acts:

The SI unit of impulse is:

The area under a force-time graph gives:

At the highest point of a vertically thrown body, its velocity is:

When two bodies stick together after collision, the first equation to use is usually:

In a plastic-impact-then-spring-compression problem, the correct sequence is:

Before a body starts to move, the friction limit is set by:

For a particle moving in a circle at speed v and radius r, the required inward normal force magnitude is:

If a vehicle moves around a bend at constant speed, which statement is correct?

If both tangential acceleration at and normal acceleration an are present, the total acceleration magnitude is:

A person standing on a rotating platform begins to slip when:

The work done by weight between two positions depends on:

If the net work done on a particle is positive, its kinetic energy:

If a moving body comes to rest, its final kinetic energy is:

In an oblique collision between smooth bodies, the restitution equation is written along:

If a particle moves under gravity and spring force only, with no friction, total mechanical energy is:

If friction acts during motion, the mechanical-energy equation must account for:

The common velocity after a perfectly plastic collision is best described as:

A vehicle on a level curve begins to skid when:

At the instant of maximum spring compression in a one-dimensional problem, the moving body velocity is:

When a problem asks directly for speed after moving a known distance under known forces, the most natural method is often:

When a force acts over a short time interval and the change in velocity is required, the most direct method is often:

If train-car masses are given in Mg, the safest step before substitution is to:

The coefficient of restitution is:

When a ball rebounds and reverses direction, the safest way to write momentum and restitution equations is to:

If the net force on a moving body acts opposite to its velocity, the body is:

The tangential component of net force changes primarily the:

The normal component of net force changes primarily the:

When a ball strikes a surface and rebounds, the impulse magnitude can exceed m u because:

On a level curve, the centripetal force needed for turning is commonly provided by:

If a block moves up a rough incline, the work done by friction over the displacement is:

For a ball bouncing vertically, the coefficient of restitution can be written in terms of bounce heights as:

In two-dimensional smooth-body impact, the momentum equation that couples with restitution is applied along:

In a circular-motion force balance, the inward net force must equal:

If friction alone provides both normal and tangential acceleration on a level curve, slipping begins when:

If a particle speed doubles, its kinetic energy becomes: