Question: 1. A woman has a mass of 63.0kg .
A. What is her weight on earth?
B. What is her mass on the moon, where g=1.62m/s2?
C. What is her weight on the moon, where g=1.62m/s2?
2. A. How much force does an 72kg astronaut exert on his chair while sitting at rest on the launch pad?
B. How much force does the astronaut exert on his chair while accelerating straight up at 14m/s2 ?
3. A. A 4000 kg truck is parked on a 15? slope. How big is the friction force on the truck?
B. A 1700kg car traveling at a speed of 36m/s skids to a halt on wet concrete where ?k = 0.20. How long are the skid marks?
4. A. What is the drag force on a 1.6 m wide, 1.4 m high car traveling at 10 m/s (? 22 mph)?
B. What is the drag force on a 1.6 m wide, 1.4 m high car traveling at 30 m/s (? 65 mph)?
5. A 1000 kg car pushes a 2000 kg truck that has a dead battery. When the driver steps on the accelerator, the drive wheels of the car push against the ground with a force of 4500 N.
A. What is the magnitude of the force of the car on the truck?
B. What is the magnitude of the force of the truck on the car?