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Assertion (A): A boy pushes the tyre again and again with a stick to increase its speed. If the net force acts in the direction of motion,

Monjur Alahi

Assertion (A): A boy pushes the tyre again and again with a stick to increase its speed. If the net force acts in the direction of motion, the speed of an object moving with constant speed also increase. 

A) A and R are true, R supports A 

B) A and R are true, R doesn’t support A 

C) A and R are false 

D) A is true and R is false


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Salim Ahmed Kawsar

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A) A and R are true, R supports A

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An example for a motion where the speed and direction of motion both changes continuously is 

B) Throwing stone into the air, making some angle with the horizontal

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Formula a = b × c, says that the net force produces acceleration in a body in the direction of force,

B) Fnet , mass, acceleration

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Take a block of ice and place it on a smooth surface, push the block with some net force. Now increase the net force and push it again.

C) Larger the net force larger the acceleration

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A) A and R are true

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Correct option is D) i, ii, iii

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For the body at motion, the net force is  A) ma  B) o

C) not equal to zero

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The direction of friction and the direction of motion are always 

Correct option is B) opposite

2 Answers 1 views
Give the magnitude and direction of the net force acting on a drop of rain falling down with a constant speed,

a) Zero net force. The rain drop is falling with a constant speed. Hence, it acceleration is zero. As per Newton’s second law of motion, the net force acting on the rain...

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An aeroplane takes 1 hour less for a journey of 1200 km if its speed is increased by 100 km/hr from its usual speed. Find its usual speed.

Let usual speed of aeroplane be x km/hr. Given, distance =1200 km Time taken for journey of 1200 km `=(1200)/(x) "hours"" "(because "Time"="Distance"/"Speed")` When the speed is increased by 100...

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A manager has kept all right of diecision making with himself each and every employee has to cvome to him for orders again and again indentify the con

Correct Answer - Delegation.

2 Answers 1 views

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