(a) 10 m s-1 -3 m s-2 12 m s-1 9.9 m s-1 30 s (a) 56 m 48 s 2.8 m s-1 12.6 m 360 m 43.5 m 7.5 m -15 m s-2 118 m (a) 40 m 0.1 m s-2 (a) A ball is accelerating – 10m west down towards ground. 0.8 m s-1 10 m s-2 B ball is bouncing on – 0.2 m s-1 west ground. C ball is decelerating – (a) 0 m Velocity-Time Graphs (p9 upwards. – 8.89 m s-1 11) D ball reaches highest – 0 m s-1 (a) Uniform acceleration E ball is accelerating – (a) 700 m Uniform deceleration down towards ground. 500 m (053°) Constant speed / zero 0.78 m s-1 acceleration The ball is losing energy 0.56 m s-1 (053°) Accelerates uniformly from rest. Stays at a (a) 18.3 m s-1 constant speed. 66 km h-1 Decelerates uniformly 13.0 m s-1 (140°) until it has stopped. (a) 85.0 km h-1 46.1 km h-1 (283°) (a) 19.8 m s-1 15.4 m s-1 (260°) Weight (p12 13) – Mass is a measure of how much of an object is there. Acceleration (p7 8) – It is measured in kg. Weight is a downward (a) 2 m s-2 force caused by gravity. 3 m s-2 It is measured in N. 9 m s-1 36 m s-1 (a) 30 N 4 s 2.25 N 4.2 s 30 kg 30 kg 2 m s-2 8 N kg-1 (a) 4 m s-2 26 N kg-1 1.6 m s-2 8 m s-2 3 m s-2 (a) 30 N 22.5 s
(a) 10 m s-1 12 m s-1 30 s 48 s 360 m 7.5 m (a) 40 m 10m west 0.8 m s-1 0.2 m s-1 west (a) 0 m 8.89 m s-1 0 m s-1 (a) 700 m 500 m (053°) 0.78 m s-1 0.56 m s-1 (053°) (a) 18.3 m s-1 66 km h-1 13.0 m s-1 (140°) (a) 85.0 km h-1 46.1 km h-1 (283°) (a) 19.8 m s-1 15.4 m s-1 (260°) Acceleration (p7 – 8) (a) 2 m s-2 3 m s-2 9 m s-1 36 m s-1 4 s 4.2 s 2 m s-2 1.6 m s-2 22.5 s 9.9 m s-1 2.8 m s-1 -15 m s-2 0.1 m s-2 10 m s-2 Velocity-Time Graphs (p9 – 11) (a) Uniform acceleration Uniform deceleration Constant speed / zero acceleration Accelerates uniformly from rest. Stays at a constant speed. Decelerates uniformly until it has stopped. (a) 4 m s-2 8 m s-2 3 m s-2 -3 m s-2 (a) 56 m 12.6 m 43.5 m 118 m (a) A – ball is accelerating down towards ground. B – ball is bouncing on ground. C – ball is decelerating upwards. D – ball reaches highest E – ball is accelerating down towards ground. The ball is losing energy Weight (p12 – 13) Mass is a measure of how much of an object is there. It is measured in kg. Weight is a downward force caused by gravity. It is measured in N. (a) 30 N 2.25 N 30 kg 30 kg 8 N kg-1 26 N kg-1 (a) 30 N
dynamics_and_space_problem_booklet.docx