NEET UG Laws of Motion — practice questions
40 free MCQs with worked solutions. Tap any question for the answer + explanation, or practice them all in the app.
Practice NEET UG Laws of Motion in the app →A passenger standing in a bus is thrown backward when the bus suddenly starts moving forward. This is best expOne newton is defined as the force that gives a mass of 1 kg an acceleration of:The linear momentum of a body is defined as the product of its:The impulse of a force has the same dimensions as:The action and reaction forces of Newton's third law:For a given pair of surfaces, the coefficient of kinetic friction is usually:A constant force of 20 N acts on a 5 kg body initially at rest. Its speed after 3 s is:A 0.15 kg ball moving at 12 m s⁻¹ is hit straight back along its path with the same speed. The magnitude of thA 0.04 kg bullet moving at 90 m s⁻¹ is stopped after penetrating 0.6 m into a block. The average resistive forA box rests on the floor of a truck with coefficient of static friction 0.15. The maximum acceleration of the A block just begins to slide down an incline when the angle of inclination is 30°. The coefficient of static fA 0.02 kg bullet is fired with a speed of 300 m s⁻¹ from a 4 kg gun. The recoil speed of the gun is:A 50 kg person stands on a weighing scale inside a lift accelerating upward at 2 m s⁻² (g = 10 m s⁻²). The scaA 0.5 kg stone tied to a string is whirled in a horizontal circle of radius 2 m at a speed of 4 m s⁻¹. The tenThe maximum speed at which a car can round an unbanked circular turn of radius 150 m without skidding is (μs =A 3 kg block hangs from a light string passing over a frictionless pulley and pulls a 20 kg trolley along a hoFor a 3 kg block connected over a frictionless pulley to a 20 kg trolley (μk = 0.04, g = 10 m s⁻²), the tensioA 6 kg mass hangs from a light rope. A horizontal force of 50 N is applied at the rope's midpoint (g = 10 m s⁻One ball strikes a wall normally and rebounds with unchanged speed; an identical ball strikes at 30° to the noA net force F = 6t newton (t in seconds) acts on a 2 kg body initially at rest. The speed of the body at t = 4A block slides down a rough incline of 30° with coefficient of kinetic friction 0.2 (g = 10 m s⁻²). Its acceleA lift descends with a downward acceleration equal to g. The apparent weight of a passenger standing inside isA 10 N horizontal force is applied to a 2 kg block that pushes a 3 kg block in contact with it on a frictionleA 0.2 kg ball strikes the floor vertically at 10 m s⁻¹ and rebounds at 8 m s⁻¹. The magnitude of the impulse iThe optimum (design) speed for a car on a frictionless road banked at 45° along a curve of radius 100 m is (g According to Galileo's law of inertia, an object moving on a frictionless horizontal plane will:Newton's first law of motion is essentially a statement of:The SI unit of force, the newton, is defined as the force that:Momentum p of a body of mass m moving with velocity v is defined as:A bullet of mass 0.04 kg moving at 90 m s⁻¹ is brought to rest by a wooden block over 60 cm. The average retarA batsman hits a 0.15 kg ball back along the line of approach without changing its speed of 12 m s⁻¹. The magnNewton's second law is often written as F = m a. This form is strictly valid when:A cricketer draws his hands back while catching a fast ball. The physical reason is that:A force F acts on a particle making an angle θ with its instantaneous velocity. The component of velocity perpTwo identical billiard balls strike a smooth rigid wall with equal speeds u. Ball A strikes head-on (normal inNewton's third law states that 'action and reaction are equal and opposite'. The most accurate restatement is:A man weighing 50 kg jumps off a stationary boat of mass 250 kg into water with a horizontal velocity 2 m s⁻¹ A car of mass 1000 kg accelerates from rest to 20 m s⁻¹ in 5 s on a level road. The net horizontal force on thA stone of mass 0.5 kg is whirled in a horizontal circle of radius 1 m at constant angular speed 4 rad s⁻¹ by A constant force of 6 N acts for 4 s on a 2 kg body initially at rest. The kinetic energy of the body at the e