A man on a motorcycle starts from rest from a point A at the bottom of one hill and travels to a point B at the bottom of another hill. The total distance of the journey is 120 km. The resistance to motion is constant at 300 N throughout the journey. Point A is 1500m higher than point B.
The total mass of the man and his motorcycle is 240kg. When the motorcyclist reaches the point B, his speed is 90 km/h. Calculate the work done by the motorcycle during the journey.
OK basically my tutor has left me with this equation.
Total energy at (t=t) = Total energy at t=0
ok when t=0
h= I dont know what h is!!!! is this 1500??
v = 90 km/h (does this need changing to mph?)
m = 240000
h = 0?????
I also know the equation work = force*distance