Lesson: Acceleration due to GravityPhysics
In this lesson, we will learn how to calculate the properties of the motion of an object that moves under constant acceleration due to gravity.
Sample Question Videos
A rescue helicopter is hovering over a person whose boat has sunk. One of the rescuers throws a life preserver straight down to the victim with an initial vertically downward velocity of 1.40 m/s and observes that it takes 1.80 s to reach the water. How high above the water was the preserver released?
A kangaroo can jump over an object 2.50 m high.
What is the initial vertically upward speed of the kangaroo that jumps over the object?
How much time is the kangaroo in the air for during its jump over the object?
Suppose that a person takes 0.35 s to react and move his hand to catch an object he has dropped. Assume that acceleration due to gravity on Earth is 9.8 m/s2.
How far does the object fall on Earth?
How far does the object fall on the Moon, where the acceleration due to gravity is one sixth of that on Earth?