2057 q. no. 9 a a typical car weighs about 1200 n. if the
coefficient of rolling friction is ur = 0.015. what horizontal
force is needed to make the car move with constant speed of
72 km/h on a level road? also calculate the power developed
by the engine to maintain this speed.
ans. 18 n, 360 w

Aplane flies directly between two cities, a and b, which are separated by . from a to b, the plane flies into a headwind. on the return trip from b to a, the wind velocity is unchanged. the trip from b to a takes less than the trip from a to b. what is the airspeed of the plane, assuming it is the same in both directions

Herbivores, carnivores, and omnivores are all types a. decomposers b. producers c. consumers d. biomes

If the ama of the inclined plane below is 2, calculate the ima and efficiency. ima = efficiency =