Physics

posted by .

What is the acceleration of a projectile fired vertically upwards? Is it positive or negative?
Vertically downwards?

• Physics -

gravity always accelerates objects toward the center of the Earth

• Physics -

That is what I was thinking. I just was not sure if firing the object made a difference.

• Physics -

Either way it's -9.8m/s2 since it is slowing down due to the acceleration of gravity if thrown upwards. The same with vertically downwards, it's accelerating downwards -9.8m/s2 due to the acceleration of gravity.

Similar Questions

1. Physics (last question)

A 800 kg projectile is fired vertically upward with an intitial velocity of 50 m/s. Assuming that no friction is present, how high above the ground will the projectile travel?
2. Physics No one has responded could someone help

A 61 kg soccer player jumps vertically upwards and heads the 0.45 kg ball as it is descending vertically with a speed of 29 m/s. If the player was moving upward with a speed of 4.0 m/s just before impact, what will be the speed of …
3. Physics

I wasn't asking anyone to do it for me. I need help starting it. I've been waiting all weekend. Posted it a few times: A 61 kg soccer player jumps vertically upwards and heads the 0.45 kg ball as it is descending vertically with a …

A 58.0 kg soccer player jumps vertically upwards and heads the 0.45 kg ball as it is descending vertically with(b) If the ball is in contact with the players head for 19 ms, what is the average acceleration of the ball?

A 58.0 kg soccer player jumps vertically upwards and heads the 0.45 kg ball as it is descending vertically with(b) If the ball is in contact with the players head for 19 ms, what is the average acceleration of the ball?
6. physics

A 81.0 kg soccer player jumps vertically upwards and heads the 0.45 kg ball as it is descending vertically with a speed of 28.0 m/s. If the player was moving upward with a speed of 4.40 m/s just before impact. (a) What will be the …
7. Physics

A 55-kg soccer player jumps vertically upwards and heads the 0.45-kg ball as it is descending vertically with a speed of 30 m/s. (a) If the player was moving upward with a speed of 4.0 m/s just before impact, what will be the speed …
8. physics

The vertical acceleration of a projectile A)equals g pointing sometimes upwards and other times downwards. B)equals g pointing upwards C)is zero. D)equals g pointing downwards E)continuously increases. Thanks!
9. physics

a stone is dropped vertically into a lake which one of the following statements best describes the motion of the stone at the instant it enters the water?
10. Physics

1. Which statement below is true? a. If a car is traveling eastward, its acceleration is eastward. b. If a car's speed is decreasing, its acceleration must be negative. c. If a particle is moving, it must have a non-zero acceleration.

More Similar Questions