Physics
posted by Lesley .
A rock is dropped from a height of 2.7 m. How fast is it going when it hits the ground?

Physics 
bobpursley
vf^2=vi^2+2gh
Respond to this Question
Similar Questions

Calculus
well i have this homework question that says: A rock is dropped from the top of a 300ft cliff. It's velocity at time t seconds is v(t0= 32 t feet per second. a.) Find the height of the rock above the ground at time t. b.) How long … 
Physics
A boy kicks a rock off a cliff with a speed of 19.4 m/s at an angle of 52.5° above the horizontal. The rock hits the ground 5.41 s after it was kicked. a) How high is the cliff? 
Physics
If a rock is dropped from a height of 64 feet, how long does it take to hit the ground? 
physics
a rock is dropped from a height of 15m above the ground. when it hits the ground, it leaves a hole 12cm deep. what is the speed of the rock when it hits the ground? 
physics
a rock is dropped from a height of 15m above the ground. when it hits the ground, it leaves a hole 12cm deep. what is the speed of the rock when it hits the ground? 
Physics
You shoot a rock with a wristrocket straight up, it takes 6 seconds for it to come back down (IGNORE THE HEIGHT YOU SHOT IT FROM.) How high did the rock go? 
pre calc
A rock is dropped form the top of a cliff. It takes 12 seconds to hit the ground. What is the height in feet of the cliff? 
physics
Question 1) A rock is dropped from the top of a 100 meter tall cliff. A. ) How long will it take for the rock to reach the ground. B) What will be the velocity of the rock when it hits the ground? 
physics
a rock is dropped from a height of 20m above the ground when it hits the ground it leaves a hole 10cm deep. With what speed does the rock hit the ground, what is the magnitude of the rock's deceleration after it hits the ground 
physics
a rock is dropped from a height of 20m above the ground when it hits the ground it leaves a hole 10cm deep with what speed does the rock hit the ground, and what is the magnitude of the rock's deceleration after it hits the ground