Problems 1 . [5.0 kN, upwards] Determine the net force acting on a 1000 kg rocket accelerating at 5.0 m/ $2 directly upwards. 2. A 48.0 kg wheelbarrow full of soil is accelerated horizontally to the east across the lawn at 4.00 m/s from rest. Calculate the net force acting on it. [192 N, east] 3. If a net force of 13 N to the south acts upon a 3.0 kg rock, determine the resulting acceleration. [4.3 m/s, southor be of ethelpigs bassoon might 4 . Curling rocks are made of high-density granite from Wales and Scotland. In one situation a 20 kg curling rock comes to a stop, from an initial speed of 2.10 m/s, in a time of 6.0 s. Determine the magnitude of the force on the rock that causes it to stop. [7.0 N] F = ? Vi = 2. 10 m/s t = 6.0s Chapter 3 yright Resource Development Services, Edmonton Public Schools 2007