A skydiver opens a parachute. Which change causes the skydiver to slow down? , Gravity becomes smaller, Mass becomes smaller, Air resistance becomes larger, Weight becomes larger, An object is moving at a constant speed in a straight line. The forces on the object must be:, Unbalanced and increasing , Balanced and equal, Unbalanced and decreasing, Balanced but changing direction, Mass is different from weight because:, Mass changes on different planets, Weight is measured in kilograms, Mass depends on gravity but weight does not, Weight depends on gravity but mass does not, If the mass of an object doubles, its weight will:, Stay the same , Halve, Double, Stay the same, Light from an event reaches you before the sound because, Light travels much faster than sound, Light is louder than sound, Sound cannot travel through air, Sound needs gravity to travel, A car travels at 15 m/s for 4 seconds. How far does it travel? , 19 m, 60 m, 45 m, 3. 75 m, Using a 2-second rule, how far behind should a car be travelling at 25 m/s?, 12.5 m, 25 m, 75 m, 50 m, On a distance-time graph, the speed of an object is shown by the:, Height of the line, Colour of the line, Steepness of the line, Length of the line, As a meteor gets closer to Earth, the force of gravity on it:, Decreases, Increases, Stays the same, Disappears, A car's distance-time graph starts as a straight line, then becomes horizontal for a short time, and then becomes a straight line again but less steep than before. What is the best description of the car's journey? , It speeds up, stops, then moves faster than before, It moves at a constant speed, stops, then moves at a slower constant speed, It accelerates, stops, then accelerates again, It moves slowly, speeds up, then stops.

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