[1pt] Which of the following graphs applies to each situation? Each graph shows
ID: 1838818 • Letter: #
Question
[1pt] Which of the following graphs applies to each situation? Each graph shows the behaviour of two objects; east is in the direction of positive d. (E.g., if graph A applies to situation 1, and C to the rest, enter ACCCCC)
1) A jogger overtaking a walker.
2) A race car speeding up to match the speed of a second race car.
3) A car moving at a steady speed is overtaken by a police car starting from rest.
4) An initially moving truck speeding up eastward and a westward moving truck slowing down.
5) A ball thrown upward and a ball thrown downward at the same time with the same initial speed.
6) A car, initially at rest, accelerating and a car moving initially at constant speed applying the brakes until it stops.
Explanation / Answer
1) A jogger overtaking a walker
Graph B - it perfectly describe the situation walker is ahead walking(intercept at d) and jooger has started jooging from d=0 and at later time overtakes the walker.
2)A race car sppeding up to match the speed of second race car.
Graph- I One is moving with constant velocity and the other is speeding up to match that velocity.
3) A car moving at a steady speed is overtaken by a police car starting from rest.
Graph- I One is moving with constant velocity and other is speeding up to match its velocity.
4)An initially moving truck speeding up eastward and a westward moving truck slowing down.
Graph-H two opposite trajectories one moving eastward and other moving westward
5)A ball thrown upward and a ball thrown downward at the same time with the same initial speed
Graph-G first the upward thrown ball risis and then falls and second one has been thrown downwards
6)A car, initially at rest, accelerating and a car moving initially at constant speed applying the brakes until it stops.
Graph-A ..the lower one first moving with constant speed(horizontal line) and then its speed decreases till it stops and the second one is accelerating