JAMB UTME Dynamics: Force and Newton's Laws of Motion — practice questions
60 free MCQs with worked solutions. Tap any question for the answer + explanation, or practice them all in the app.
Practice JAMB UTME Dynamics: Force and Newton's Laws of Motion in the app →Dynamics is best described as the study of which of the following?Which description of force is correct?What does a free-body diagram show?A spring is stretched a fixed distance and the force it exerts as it returns to its relaxed shape is used as aWhich statement is Newton's first law of motion?What is inertia?How is the inertia of an object measured, and how does that measure behave with location?Which has more mass, a kilogram of cotton balls or a kilogram of gold?An object sliding across a rough table slows down and stops. What causes the slowing?In practice, how are the masses of objects determined?Newton's second law of motion states that the acceleration of a system is related to the net external force anThe same net external force is applied first to a basketball and then to a stalled car. What happens to the acOne newton of force is defined as the force needed to do which of the following?Two children push a wagon carrying a third child, and the system of interest is the wagon plus its rider. How What is the weight of a 1.0 kg object at the surface of the Earth?A 1.0 kg mass weighs 9.8 N on Earth. What does the same mass weigh on the Moon?Which statement correctly distinguishes mass from weight?The net external force on a lawn mower of mass 24 kg is 51 N parallel to the ground. What is its acceleration?A rocket sled of total mass 2100 kg has an initial acceleration of 49 m/s^2 while friction opposing the motionRocket sled tests reached accelerations of 45 g. Roughly what acceleration is that in SI units?Friction is defined in the study of Newton's laws as which of the following?Which statement is Newton's third law of motion?A swimmer pushes on a pool wall with her feet and accelerates away from it. Why do the two forces of this actiHow does a rocket move forward, and where does it work best?How does a helicopter obtain the upward force that lifts it?A lecturer of mass 65.0 kg pushes a 12.0 kg cart carrying 7.0 kg of equipment. She pushes backward on the flooTaking only the cart plus equipment as the system, of mass 19.0 kg accelerating at 1.5 m/s^2 against 24.0 N ofWhy do forces between the components of a chosen system never appear in the net external force?A load rests on a table. What is the supporting force the table applies called, and in what direction does it A crate of mass m rests on a level surface that is not accelerating. What is the magnitude of the normal forceHow does the normal force on an object resting on an incline compare with its full weight?A skier of total mass 60.0 kg is on a slope at 25 degrees to the horizontal with friction negligible. What is The same 60.0 kg skier on the 25 degree slope now meets 45.0 N of friction. What is her acceleration down the An object rests on an incline making an angle with the horizontal. How are the components of its weight writteTension is best described as which kind of force?A 5.00 kg mass hangs stationary from a rope of negligible mass. What is the tension in the rope?A rope of negligible mass runs from a hand to a hanging load. What can be said about the tension along it?A flexible connector passes over a frictionless pulley and changes direction. What happens to the tension it cA tightrope walker of mass 70.0 kg stands at the middle of a wire that sags by 5.0 degrees on each side. What A perpendicular force is applied at the middle of a flexible connector that makes a small angle with the horizWhat is an inertial frame of reference?A satellite heading due north above the northern hemisphere appears to an observer on Earth to feel a westwardWhat may be drawn on a free-body diagram?A crate accelerates horizontally but has no vertical acceleration. What do Newton's laws give for the net forcWhen applying Newton's laws to an object on an incline, which choice of axes is most convenient?Two tugboats push a barge, one with 2.7 x 10^5 N along the x direction and one with 3.6 x 10^5 N along the y dThe barge of mass 5.0 x 10^6 kg feels a total applied force of 4.5 x 10^5 N and is observed to accelerate at 7A traffic light of mass 15.0 kg hangs from two wires, one at 30 degrees and one at 45 degrees to the horizontaFor that 15.0 kg traffic light, the wire at 30 degrees carries tension T1 and the wire at 45 degrees carries tA man of mass 75.0 kg stands on a bathroom scale in a lift accelerating upward at 1.20 m/s^2. What does the scThe same 75.0 kg man now rides the lift upward at a constant speed of 1 m/s. What does the scale read?A lift carrying a man on a bathroom scale goes into free fall, accelerating downward at the acceleration due tA footballer starts from rest and reaches a velocity of 8.00 m/s in 2.50 s. What is his average acceleration?That footballer has a mass of 70.0 kg and accelerates at 3.20 m/s^2 with air resistance negligible. What averaWhat are the four basic forces of nature?Which particle is listed as the carrier of the electromagnetic force?By approximate relative strength, which of the four basic forces is the weakest?Which of the four basic forces is described as attractive only?Which two of the basic forces become indistinguishable at extremely high density and temperature?Which force dominates the motions of moons, planets, stars and galaxies?