Sunday

January 25, 2015

January 25, 2015

Posted by **Tashanna** on Monday, July 16, 2007 at 1:39pm.

A. How many seconds after the rock is thrown will it reach its maximum height?

B.What is the maximum height the rock will reach, in meters?

C. How many seconds after the rock is thrown will it hit the ground?

It will reach the max height after 2.45 secs.

You can find the max height by differentiation and setting it to zero. ie. 24 -9.8 t = 0 and solve for t to be 2.45 secs.

Then use 2.45 in the equation to find the max height to be 2 + 24 *2.45 + 4.9 (2.45)(2.45) = 90.21 meters.

It will hit the ground in 2.45 * 2 secs = 4.90 secs

**Answer this Question**

**Related Questions**

math - on earth, in the absence of air, the rock in excersise 13 would reach a ...

physics - Julie throws a rock vertically upward. From a height of 64.0 meters ...

Math - The height(h) of an object that has been dropped or thrown in the air is...

Math - The height(H) of an object that has been dropped or thrown in the air is ...

Physics - A rock is dropped from a height of 100 meters above the ground. One ...

Physics - A rock is dropped from a height of 100 meters above the ground. One ...

Physics - A rock is thrown vertically upward with a speed of 11.0 from the roof ...

Math Help (URGENT X10) - This is really urgent so please please please help. The...

math - a rock is thrown straight up in the air from an initial height of ho, in...

Calc - A rock is thrown upwards (vertically) from the ground with an initial ...