Average speed (v) = total distance(d) / total time (t)
d = 57 + 87km = 144km
t = 2 + 3hrs = 5hrs
v = d÷t = 144÷5 = 28.8km/hr
Always stop as soon as you can at a safe place and shut the engine off when the warning/gauge light goes on in a vehicle.
D.
Due to the greater distance from the pivot, less force is required to crack the nut as
Moment = Force x distance.
If forces on an object are balanced, it stays in place. Like if two equally strong people push opposite sides of a box, the box will not move. If an object has unbalanced forces acting upon it, it will move the direction the greater force is directing its force. Like if a toddler and a bodybuilder pushed opposite sides if a box, the bodybuilder would move the box, and the toddler would be trampled.
