With what initial velocity were the keys thrown

Reference no: EM13283761

A student throws a set of keys vertically upward to his fraternity brother, who is in a window 3.60 m above. The brother's outstretched hand catches the keys 1.20 s later. (Take upward as the positive direction. Indicate the direction with the sign of your answer.)

(a) With what initial velocity were the keys thrown? m/s

(b) What was the velocity of the keys just before they were caught? m/s

Reference no: EM13283761

Questions Cloud

Explain dry ice is solid carbon dioxide : Dry ice is solid carbon dioxide. A 1.87g sample of dry ice is placed in an evacuated 4.03 L vessel at 22 degrees C. Calculate the pressure inside the vessel after all the dry ice has been converted to CO2 gas

Determine what is the average minority carrier lifetime : A light source generates 10^17 electron hole pairs per cm^3 persecond in an n-type sample doped ND = 10^16 cm^-3 and the average minority carrier lifetime is 10^-5 seconds. Is this Low level injection.

What is yield that trevor would earn by selling the bond : Trevor Price bought 10-year bonds issued by Harvest Foods five years ago for $964.05. The bonds make semiannual coupon payments at a rate of 8.4 percent. If the current price of the bonds is $1,071.10, what is the yield that Trevor would earn by s..

Calculate the speeders speed with respect to the ground : The wave reflects from the speeder's car and returns to the police car, where its frequency is measured to be 322 Hz less than the emitted frequency. Calculate the speeder's speed with respect to the ground.

With what initial velocity were the keys thrown : A student throws a set of keys vertically upward to his fraternity brother, who is in a window 3.60 m above. With what initial velocity were the keys thrown

What is the maximum strength of the waves electric field : The maximum strength of the magnetic field in an electromagnetic wave is 3.44E-6 T. What is the maximum strength of the wave's electric field

What is a reasonable price for a share of rah stock : RAH Inc. is not public ally traded, but the P/E ratios of its 4 closest competitors are 15, 15,3,15,7', and 16.5. RAH's current earnings per share are $ 1.50. They are expected to grow at 6% for the next few years. What is a reasonable price for a..

Determine the polar coordinates for the following points : If the polar coordinates of the point ( x , y ) are ( r , ? ), determine the polar coordinates for the following points

How much energy does this wave carry through window : The electromagnetic wave that delivers a cellular phone call to acar has a magnetic field with an rms value of 1.38E-10 T. The wavepasses perpendicularly through an open window, the area of which is0.244 m2.

User Account

All Pages