Question

Shown below are various position-time, velocity-time and acceleration-time graphs. All of the graphs have numbered points on them. For these questions include only those points where the sign of the quantity definitely has the value specified. Include all points that apply in each case, if there are none specify none.

Shown below are various position--time, velocity--time and acceleration--time graphs. All of the graphs have numbered points on them. Answer the questions below about the numbered points. For these questions include ONLY those points where the sign of the quantity DEFINITELY has the value specified. Include ALL points that apply in each case, if there are none specify NONE. 27 no V 5 V 13 12 For which point(s) is the net force positive (+)? 1,2 12 13 14 3,4,10 56789 For which point(s) is the net force zero (O)? For which point(s) is the net force negative (-)? For which point(s) is the velocity positive (+)? For which point(s) is the kinetic zero (O)? For which point(s) is the kinetic energy increasing? For which point(s) is the kinetic energy decreasing? For which point(s) is the kinetic energy constant? What is the sign of the displacement from point 5 to point 6? What is the sign of the change in velocity from point 8 to point 9?! kinetic energy & j ace and ✓ Kinetic energy - ; ac and Same direction opposite direction

Answer 1

Soin: See the figure in question : Slope of x-f curve = relocity Sloppe op vast curve = acceleration a) Net force positive - 1,2, 12, 13, 14. racco is positive] b) Net force zeco . racen is zero] c) Net force negative 5, 6, 11, 7,8,9 d) velocity positive 1,2, 5, 7,8,9, 14 e) Kinetic energy zero (vid 13 t. Kinetic energy increasing (v 1, 2, (183-14) hureasing) g) Kinetic energy decreasing 7,8,9, 5, 6,(11-10) h. Kinetic encugy constant : 3, 4.. : I daardt = area under rat grouph 2) draadt hegative caren is negative) dua positive