Tag: force and it's unit

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Questions Related to force and it's unit

Multiple choice physics along with motion what forces can do? force and it's unit force and its effects

If the the magnitude of the applied force changes while maintaining its direction, then choose the correct statement.

  1. Effect of force remain the same.

  2. Effect of force changes.

  3. Effect of force may or may not change.

  4. Insufficient information
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The effect of a force depends on its magnitude and direction. If the magnitude changes, the net effect (acceleration or deformation) will change, unless the object is in a state where the force is irrelevant.

Multiple choice physics along with motion what forces can do? force and it's unit force and its effects

The application of a force would result in a change in the state of motion of an compressible object. The given statement is:

  1. always true.

  2. not always true.

  3. always false.

  4. insufficient information
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Many a times, application of force does not result in a change in the state of motion. For example, no effect of force in the state of motion is observed when you try to push a wall.

Multiple choice physics along with motion what forces can do? force and it's unit force and its effects

What is the direction of force of friction acting on a body moving on a fixed surface?

  1. Along the direction of motion

  2. Opposite to the direction of motion

  3. It has no direction

  4. At an angle to the direction of motion
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The force of friction acts on moving objects and its direction is opposite to the direction of motion.

Multiple choice physics along with motion what forces can do? force and it's unit force and its effects

Study the impact force when a golfer drives a golf ball $230$ meters down the fairway.

  1. The impact force on the golf ball is greatest

  2. The impact force on the club head is greatest

  3. The impact force is the same for both

  4. The impact force has no effect on the club

  5. The impact force has no effect on the ball
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The impact force or impulse is given by $I=F\times t$  

 by Newton's third law both will exert an equal and opposite force on each other and time of impact is also same therefore  impact force (impulse) is same for both.

Multiple choice physics along with motion what forces can do? force and it's unit force and its effects

An object is subjected to a non-zero net force, $F$. Which of the following statements about its motion could not be true?

  1. The object will remain at rest

  2. The object has a constant velocity

  3. The object is travelling in a straight-line path with a constant speed

  4. The object is travelling in a circular path with a constant speed

  5. The acceleration of the object is perpendicular to the net force
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Net force on an object is directly proportional to the acceleration of the particle which is the rate of change of velocity.

When a body moves in a uniform circular motion, its velocity keep on changing though its speed is constant.

Multiple choice physics along with motion what forces can do? force and it's unit force and its effects

The amateur boxers, use larger and more padded gloves than professional boxers. The amateur boxers are more protected from injury because:

  1. The larger glove exerts a larger impulse on the boxer

  2. The larger glove exerts a larger force on the boxer

  3. The larger glove exerts more energy on the boxer

  4. The larger glove increases time of impact on the boxer

  5. The larger glove increases the power exerted on the boxer
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

We have impulse $\vec{I}=\vec{F}\times t=\vec{p} _{2}-\vec{p} _{1}$ 

when a boxer hits another boxer , change in momentum remains constant therefore product of force and time should be constant .we can decrease the force by increasing time of impact so boxer uses larger gloves to increase the time of impact  thus  decreases the force and avoids from injury.

Multiple choice physics along with motion what forces can do? force and it's unit force and its effects

Which of the statements about force are true?

  1. It can be seen

  2. It causes an object to move

  3. It is pull or a push

  4. It can change the motion of an object
Reveal answer Fill a bubble to check yourself
B,C,D Correct answer
Explanation

The force can net be seen but we can see the effects of the force. The force is a pull or a push. The effect of forces are like as it causes an object to move, it can change the motion of the body, it can change shape or volume of the body.