1) a fire hose shoots water horizontally from the top of a buliding toward the wall of a building 31 m away. The water leaves the nozzle of the hose at speed of 6.4 m/s. How far bellow the the level of the nozzle does the water hit the wall?
2) A 5 kg wagon is pulled along the level ground by a rope inclined at 40 degree above the horizontal. A friction force of 20N opposes the motion. How large is the pulling force if the wagonis moving with an acceleration of 0.3 m/s/s?
3. If a tow rope is pulled upward at an angle of 27 degree to the horizontal with force of 365N, it can slide a 55.2 kg box along the floor at a constant speed of 20.5 cm/s. How large a friction force opposes the box motion?
my answers is 1)4.425 m, 2) 28N and 3) 325.2 N
is my answers correct, if not please tell me the way to get the right answers
thank you
2) A 5 kg wagon is pulled along the level ground by a rope inclined at 40 degree above the horizontal. A friction force of 20N opposes the motion. How large is the pulling force if the wagonis moving with an acceleration of 0.3 m/s/s?
3. If a tow rope is pulled upward at an angle of 27 degree to the horizontal with force of 365N, it can slide a 55.2 kg box along the floor at a constant speed of 20.5 cm/s. How large a friction force opposes the box motion?
my answers is 1)4.425 m, 2) 28N and 3) 325.2 N
is my answers correct, if not please tell me the way to get the right answers
thank you