Explanation:
Answer
1
There is no exte mal net force applied so the wagon stays at rest.
Brief Explanation
The adult can exert more force so the ball moves faster.
The rocket is already in motion and will remain in uniform motion unless it its another celestial body or it runs out of
The ball maintair ed its motion until an external force like gravity and frictica pulls it back to the ground and slows down
The wind adds more force to the sailboat making it move faster.
The package har the tendency to go on with its forward motion so it slides off the seat.
The boy exerts an upward force equal to the weight of the luggage while the luggage exerts a downward force on the
boy due to its weight.
The seatbelt helps prevents the passenger from being thrown
out of the vehicle during collisions and accidents because of
inertia.
The spike provides friction or more grip orce so that the runner can exert more force on the ground and can accelerate more.
A frog forcefully pushes its hind legs backwards to give it a forceful thrust forward as it swims through the pond.
fuel/power.
its motion.
Situation
Example: A wagon left on a level sidewalk remains motionless. 1. An adult is able to throw a ball
faster than a little kid.
2. A rocket in space moving at a constant speed continues to move at that speed indefinitely.
3. A ball rolled up a hill decreases in speed and eventually rolls back down the hill.
4. A sailboat moves faster when the wind blows harder.
5. A package on a car seat slides off the seat when a car comes to a
6. A boy lifting a luggage.
7. You wear your seatbelt every time you ride a vehicle.
An external force is exerted to change the state of motion of the ketchup inside the bottle.
10. A frog pushes its hind legs as it swims through the pond.
sudden stop.
8. Runners wear spiked shoes to increase their speed.
9. To dislodge ketchup, turn the bottle upside down, thrust downward at a high speed and then abruptly stop.