Tag: along with motion

Quizzes (6) Questions (71)

Questions Related to along with motion

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

To move at the same speed, a car with a face and another with streamlined body will require a different amount of force from the engine. the engine of the streamline bodied car will

  1. exert less force

  2. exert more force

  3. exert zero force

  4. exert no force
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

A car with streamline body suffers less air air friction while moving and car with flat face will suffer higher air friction.As a result car with with streamline body will require less force from the engine to maintain the same speed

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

Which of the following property of a substance cannot be changed by application of force?

  1. Shape

  2. Size

  3. elasticity

  4. reactivity with water
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Application of force only changes the physical state of the substance but not the chemical state (properties). As reactivity of substance with water is a chemical property, thus it will not be effected due to application of force.

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

Choose the wrong statement:

  1. 1 kg wt = 9.8 N

  2. Momentum is a vector quantity.

  3. Force is always conserved.

  4. Momentum is conserved in the absence of an external force.
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

$ 1kg-wt = 1 \times 9.8 N $ 

$ momentum = mass \times velocity $ As velocity is vector, momentum is vector.
Friction is non conservative force.
According to Newton's second law, rate of change of momentum is directly proportional to applied force.
So,if force is zero, momentum is conserved.
So wrong statement is option C.

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

Change in state of motion of an object can be described as:

  1. change in speed only.

  2. change in direction of motion only.

  3. change in both speed or direction.

  4. change in neither speed nor direction.
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

A change in either the speed of an object or its direction of motion or both is described as a change in its state of motion.

Multiple choice physics along with motion what forces can do? force and it's unit force and its effects
In pressing a rubber ball placed on a table, the application of force leads to:

  1. a change in the shape of the object.

  2. a change in the state of the motion of the object.

  3. a change in the mass of the object.

  4. no change anywhere.
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

On pressing a rubber ball placed on a table,the ball compresses and hence, the shape of the ball changes.