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प्रश्न
Fill in the following blanks with suitable words :
Newton’s second law of motion can be written as Force = mass × _____________ or Force = _____________ of change of _____________.
उत्तर
Newton’s second law of motion can be written as Force = mass × acceleration or Force = rate of change of momentum.
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संबंधित प्रश्न
A 8000 kg engine pulls a train of 5 wagons, each of 2000 kg. along a horizontal track. If the engine exerts a force of 40000 N and the track offers a friction force of 5000 N, then calculate:
- the net accelerating force and
- the acceleration of the train.
An automobile vehicle has a mass of 1500 kg. What must be the force between the vehicle and road if the vehicle is to be stopped with a negative acceleration of 1.7 m s−2?
A motorcar of mass 1200 kg is moving along a straight line with a uniform velocity of 90 km/h. Its velocity is slowed down to 18 km/h in 4 s by an unbalanced external force. Calculate the acceleration and change in momentum. Also calculate the magnitude of the force required.
Explain the meaning of the following equation :
F = m x a
where symbols have their usual meanings
State and explain Newton’s second law of motion.
The acceleration produced by a force of 5 N acting on a mass of 20 kg in m/s2 is :
Complete a sentence and explain it.
During a collision, ______ remains constant.
Deduce the equation of a force using Newton’s second law of motion.
A force vector applied on a mass is represented as `vecF = 6hati - 8hatj + 10hatk` N and accelerates the mass at 1 ms-2. The mass of the body is ______.
Two blocks each of mass m lie on a smooth table. They are attached to two other masses as shown in the figure. The pulleys and strings are light. An object O is kept at rest on the table. The sides AB and CD of the two blocks are plane and made reflecting. The acceleration of two images formed in those two reflecting surfaces with respect to each other is ______.
