Kinematics: Finding Acceleration Due to Gravity on a Planet with No Atmosphere

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In summary, kinematics is a branch of physics that deals with the motion of objects without considering the forces that cause the motion. On a planet with no atmosphere, the acceleration due to gravity can be calculated using the formula g = G(M/r^2), where g is the acceleration due to gravity, G is the universal gravitational constant, M is the mass of the planet, and r is the distance from the center of the planet to the object. The acceleration due to gravity on a planet with no atmosphere is solely determined by the mass and radius of the planet, unlike on Earth where the presence of the atmosphere can affect the value of g. It also affects the rate at which objects will fall towards the planet's surface and the speed and
  • #1
krazykaci
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An object is released from rest on a planet that has no atmosphere. The object falls freely for 2.66m in the first second. What is the magnitude of the acceleration due to gravity on the planet? Answer in units of m/s^2

What kinematic equation would I use for this?
 
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  • #2
D=v0t + 1/2 *g*t2 might be a good place to start.

You have time, initial velocity, and distance. So solve for acceleration (g)
 
  • #3


To calculate the magnitude of the acceleration due to gravity on a planet with no atmosphere, we can use the kinematic equation: d = ½at^2, where d is the distance traveled, a is the acceleration, and t is the time. Since the object falls freely, we can assume that the initial velocity (vi) is 0. Plugging in the given values, we get 2.66m = ½a(1s)^2. Solving for a, we get a = 2(2.66m)/(1s)^2 = 5.32m/s^2. Therefore, the magnitude of the acceleration due to gravity on this planet is 5.32m/s^2.
 

1. What is kinematics?

Kinematics is the branch of physics that deals with the motion of objects without considering the forces that cause the motion.

2. How is acceleration due to gravity calculated on a planet with no atmosphere?

The formula for calculating acceleration due to gravity on a planet with no atmosphere is g = G(M/r^2), where g is the acceleration due to gravity, G is the universal gravitational constant, M is the mass of the planet, and r is the distance from the center of the planet to the object.

3. How does the acceleration due to gravity differ on a planet with no atmosphere compared to Earth?

The acceleration due to gravity on a planet with no atmosphere is solely determined by the mass and radius of the planet, whereas on Earth, the presence of the atmosphere can affect the value of g. Additionally, the mass and radius of the planet will determine the strength of the gravitational force.

4. Can the acceleration due to gravity change on a planet with no atmosphere?

No, the acceleration due to gravity on a planet with no atmosphere will remain constant as long as the mass and radius of the planet do not change.

5. How does the acceleration due to gravity affect the motion of objects on a planet with no atmosphere?

The acceleration due to gravity determines the rate at which objects will fall towards the planet's surface. It also affects the speed and trajectory of objects that are launched or thrown on the planet.

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