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One question set, multiple game modes. Tap any game to see it in action. Not sure which to pick?
Answer to place stones and capture territory.
Outrun the snow together.
Earn blasts, then hunt the other team.
Answer to earn energy, then climb.
The class blasts through walls together.
Bid on mystery lots. Most money wins.
Sell tours. Nice, standard, or a total scam.
Answer, restock, and serve the rush.
More correct answers pulls the rope your way.
Answer, then shoot down the alien wave.
Answer, then tap to leap the frozen ridge.
Refer to the diagram for the question.
Two objects move towards each other along the same straight line. After colliding, the two objects stick together and are stationary. Which statement must be correct?
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A builder holding a brick of mass 3000 g drops the brick on his foot. What is a reasonable estimate of the change in gravitational potential energy of the brick?
A resultant force causes an object to accelerate. What is equal to the resultant force?
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Refer to the diagram for the question.
What is meant by the efficiency of a system?
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Refer to the diagram for the question.
A system has a useful power output of 4.0 W and a wasted power of 16 W. What is the efficiency of the system?
Refer to the diagram for the question.
Refer to the diagram for the question.
A ball is thrown vertically upwards from the surface of the Earth. Which statement describes the energy of the ball as it rises through the air?
Refer to the diagram for the question.
A steam turbine is used to drive a generator. The input power to the turbine is PI and the output power is PO. The power loss in the turbine is PL, as shown. What is the efficiency of the turbine?
A variable force is applied to ensure that a constant power is supplied to a train. Which graph best shows the variation of the force F applied with the velocity v of the train?
Refer to the diagram for the question.
Refer to the diagram for the question.
A car moves along a horizontal road with a constant velocity v against a resistive force F. The engine of the car has an efficiency of 25%. What is the input power to the engine?
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A car of mass 1200 kg has momentum 18 000 kg ms–1. What is the kinetic energy of the car?
A stationary ball of mass m is hit by a bat. The ball leaves the bat with velocity v. The bat is in contact with the ball for a short time Δt. What is the average force of the bat on the ball?
A ball of mass m is thrown up to height h in air with an initial velocity v, as shown. Air resistance is negligible. The acceleration of free fall is g. What is the total work done by the gravitational force on the ball during its flight from P to Q?
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A ball of mass 2.0 kg travels horizontally with a speed of 4.0 m s–1. The ball collides with a wall and rebounds in the opposite direction with a speed of 2.8 m s–1. The time of the collision is 150 ms. What is the average force exerted on the wall?
Refer to the diagram for the question.
A model car travels at a constant velocity of 12 m s–1 in a straight horizontal line. The input power to the engine of the car is 800W. The efficiency of the engine is 60%. What is the total horizontal resistive force on the car?
Which statement represents the principle of conservation of energy?
A barrel of mass 50 kg is loaded onto the back of a lorry 1.6 m high by pushing it up a frictionless plank 3.4 m long. What is the minimum work done?
Two objects X and Y form an isolated system. X and Y collide and then separate. The mass of X is greater than the mass of Y. Which statement about the collision is correct?
Which row states whether total momentum and total kinetic energy are conserved in an inelastic collision in which there are no external forces?
A student can run or walk up the stairs to her classroom. Which statement describes the power required and the gravitational potential energy gained while running up the stairs compared to walking up them?
Crack the passcode before the zombies get in.
Answer, then swat bugs for bonus points.
Race through questions at your own speed.
Same question on every screen. Fastest wins.
Pick a tile, answer, hit bonuses and steals.
General Science - Final Term Review
109 questions
