- 1. An object is spun around in a circle of radius 06 m with a period of 1.2s. What I the magnitude of the velocity? Formula T=
- Graphing Position-Time graph from a story 1. The car leaves home and travels 40.0 km south in 1.5 hours. 2. The car is stationary for 1.0 hour. 3. The car continues south for 30.0 km. It takes the car 1 hour to travel this distance. 4. The car then turns around and travels 100.0 km
- A physics teacher throws a 6kg dodgeball 21m/s hitting a 60kg student who is initially at rest on a skateboard. After hitting the student, the dodgeball rebounds back left with a speed of 4m/s vert Jvert =square kgm/s before collision: P_(student)=0 kgm/s after collision: P_(ball)=square kgm/s P_(student)=150kgm/s How fast did the student move after the impact? m/s What was the magnitude of the average Impact force if the impact lasted 0.29s? 517 square v
- 1. How old is the earth? __ 2. What is a shooting star? __ 3. Of what is the moon made? __ 4. When was the last time humans set foot on the moon? __ 5. a) Name the two planets that are closest to the Earth. __ b) Have humans visited these planets? __ 6. How close is the nearest star? __ 7. What is a galaxy? __ 8. How big is the universe? __ 9. a) Is there life in our solar system other than on Earth? __ b) in the universe? __ 10. What is the difference between astronomy and astrology? __
- The Stefan - Boltzmann law describes the power radiated from a black body: a) S=klnW b) varepsilon =(3)/(2)kT c) R=sigma T^4 d) E=hv