Locusts can jump to heights of 0.30 m. 

(a) Assuming the locust jumps straight up, and ignoring air resistance, what is the takeoff speed of the locust? 

(b) The locust actually jumps at an angle of about 55° to the horizontal, and air resistance is not negligible. The result is that the takeoff speed is about 40% higher than the value you calculated in part (a). If the mass of the locust is 2.0 g and its body moves 4.0 cm in a straight line while accelerating from rest to the takeoff speed, calculate the acceleration of the locust (assumed constant). 

(c) Ignore the locust's weight and estimate the force exerted on the hind legs by the ground. Compare this force with the locust's weight. Was it reasonable to ignore the locust's weight?