| A | B |
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| What force is needed to accelerate a child on a bike (total mass = 70.0 kg) at 2.35 m/s^2? | ??? |
| A net force of 600 N accelerates a bike and rider at 1.45 m/s^2. What is the mass of the bike and rider? | ??? |
| How much force is required to accelerate a 25.0-g object at 6 g's? | ??? |
| How much tension must a rope withstand if it is used to accelerate a 1250-kg car horizontally at 2.50 m/s^2? Ignore friction. | ??? |
| What is the weight of a 66-kg astronaut (a) on Earth, (b) on the Moon (g = 1.7 m/s^2), (c) on Mars (g = 3.7 m/s^2), and (d) in outer space traveling with constant velocity? | ??? |
| What average force is required to stop an 1100-kg car in 8.0 s if it is traveling at 90 km/h? | ??? |
| What average force is needed to accelerate a 7.00-gram pellet from rest to 175 m/s over a distance of 0.700 m along the barrel of a rifle? | ??? |
| A 0.140-kg baseball traveling 45.0 m/s strikes the catcher's mitt, which, in bringing the ball to rest, recoils backward 11.0 cm. What was the average force applied by the ball on the glove? | ??? |
| Two forces, 10.2 N west and 16.0 N south, are applied to a 27.0-kg object. Find the net force acting on the object and its acceleration. | ??? |
| According to a simplified model of a mammalian heart, at each pulse, approximately 20 g of blood is accelerated from 0.25 m/s to 0.35 m/s during a period of 0.10 s. What is the magnitude of the force exerted by the heart muscle? | ??? |
| A person has a reasonable chance of surviving an automobile crash if the deceleration is no more than 30 g's. Calculate the force on a 70-kg person accelerating at this rate. What distance is traveled if brought to rest at this rate from 90 km/h? | ??? |
