Speed Hammer
Speed Hammer
Check out this page if you are looking for Speed Hammer
 |
 Porter Cable Tradesman 1 2 in Two Speed Hammer Drill PC650HDR  US $51.98
|
 Dewalt VSR DW515 1 2 Corded Variable Speed Hammer Drill US $5.75
|
 Bosch 1191VSRK 120V 1 2 Single Speed Hammer Drill US $74.99
|
 CRAFTSMAN PROFESSIONAL 1 2 HAMMER DRILL 75 AMP VARIABLE SPEED US $82.95
|
 1 2 Professional Variable Speed Reversible Hammer Drill US $49.99
|
 Milwaukee 1 2 in Dual Speed Hammer Drill 5387 20 US $169.00
|
 ROYOBI 2 Speed Hammer Drill Model D550H w holster US $37.95
|
 Ryobi D552H 1 2 Two Speed Hammer Drill W Case US $59.99
|
 Milwaukee 5380 21 1 2 Inch Hammer Drill 9 Amp Dual Speed Avs US $100.00
|
 Ryobi Two Speed Hammer Drill US $42.99
|
 Makita 1 inch Rotary Hammer SDS V 5 Speed HR 2511 Nice US $349.00
|
 Porter Cable 1 2 in VSR 2 Speed Hammer Drill PC70THD NEW US $86.98
|
 Ridgid 85 Amp 1 2 HD 2 Speed Hammer Drill ZRR5011 US $96.98
|
 Makita 1 2 2 Speed Hammer Drill US $89.95
|
 Makita HP2031 3 4 Hammer Drill 2 Speed VSR US $204.99
|
 Ryobi D551H 1 2 Corded Hammer Drill Variable Speed US $54.99
|
Physics question finding speed and horizontal distance.?
A roofer places a hammer on a roof that has a slope of 20 degrees. The coefficient of friction between the hammer and the roof is 0.2, and the hammer is placed 8 meters from the edge of the roof. Find the speed of the hammer as it leaves the roof and if the edge of the roof is 5 meters above the ground, how far from the edge of the roof ( horizontal distance ) does the hammer hit the ground?
m . a = m . g . sin20 – µ . m . g . cos 20
a = 1.51 m/s/s
v^2 = 2 . 1.51 . 8^2 = 193
v = 13.9 m/s
v(down at roof edge ) = 13.9 . sin 20 = 4.755 m/s
v ( down at ground ) = √ ( 4.755 )^2 + 2 . 9.8 . 5 = 11 m/s
time to ground = v – u / g = 11 – 4.755 / 9.8 = 0.635 s
Distance sideways in this time = 13.9 . cos 20 . 0.635 = 8.3 m