A ball is tossed straight up from the surface of a small spherical asteroid with no atmosphere. The ball goes to a height ewual to the asteroid's radius and then falls straight down towardd the surface of the asteroid. What forces if any act on the ball while it is on the way up?
a) only a decreasing gravitational forces acts downward
b) Only an increasing gravitational gorce that acts downwards.
c) only a constant gravitational gorce that acts downwards
d) Both a constant gravitational foce that acts downwards and a decreasing force that acts upwards.
e) No foces act on the ball
I beleieve the answer is c) sincce the question asks for the forces that act on the ball when it is going up. Plus in this situation wouldn't g be constant?
How can the gravity force be constant?
gravity force= GmM/distance^2 Distance is changing.
But in this situation there is no atmosphere so would that make it constant?
i took a test with this on it and the answer is a
In this case, the correct answer is e) No forces act on the ball.
When the ball is on the way up, the only force acting on it is gravity, which always acts downwards. According to Newton's laws of motion, the force on the ball is given by F = ma, where F is the force, m is the mass of the ball, and a is the acceleration. In this case, the acceleration is due to gravity and is always pointing downwards.
Therefore, as the ball goes up, the force of gravity is acting downwards, causing the ball to decelerate. Eventually, the ball comes to a stop at its highest point and then starts to descend. As it descends, the force of gravity still acts downwards, but now it accelerates the ball back towards the surface of the asteroid.
It is important to note that even though the distance between the ball and the center of the asteroid changes, the force of gravity is not constant. The force of gravity is given by the equation F = G * (m1 * m2) / r^2, where G is the gravitational constant, m1 and m2 are the masses of the two objects (in this case, the ball and the asteroid), and r is the distance between their centers. Since the distance between the ball and the surface of the asteroid changes, the force of gravity also changes.