Which one of the following statements is not correct?
A. If the velocity and acceleration have opposite sign, then the object is slowing down
B. If the velocity is zero at an instant, then the acceleration should also be zero at that instant
C. If the velocity is zero for a time interval, then the acceleration is zero at any instant within the time interval
D. If the position and velocity have opposite sign, then the object is moving towards the origin
Answer: Option B
This Question Belongs to Physics GK Chapter Wise >> Law Of Motion
Newton's Third Law of Motion applies to which of the following situations?
A. When a person jumps from the boat to the river, the boat goes backwards
B. Passengers standing in a bus fall in the back direction, when the stationary bus suddenly moves
C. When a person falls on the cement floor, he gets hurt
D. While catching a fast moving cricket ball, a fielder puts his hands backwards
For every action there is an equal and opposite reaction. The law was given by
A. Isaac Newton
B. Albert Einstein
C. Niels Bohr
D. Duncan Haldane
Newton's second law of motion:
A. Explains the relationship between forces on two mutually effective objects
B. Also known by the law of inertia
C. It is helpful to understand the effects of force
D. Also known by the law of conservation of energy
A. centrifugal force
B. inertia
C. centripetal force
D. gravitational force
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