Well today in class we got our Newton's Laws of Motions test back, and Ms.K went over the answers for it. So here are the answers:
1. gravitational, electromagnetic, strong nuclear, weak nuclear
2. The coin will land at your feet because it has the same velocity as the bus.
3. The net force would equal zero.
4. Normal force, gravitational force.
5. 75 N
6. It shows the forces acting on an object.
7.
8 a) acceleration will double
br) acceleration will double
c) 1/8 the acceleration
9.a) 4.oN [S]
b)7.8 [at 40° north of east]
10. a=Fnet/m
= 9.50N[S]/20.0Kg
= 0.475m/s² [S]
b) V=(A)(t)
=(o.475m/s²)(1.86s)
= 0.884m/s[S]
11. a=Fnet/m
= 3.2N[E]/ 6.0Kg
= o.533m/s²[E]
12. a=V/t Fnet=(a)(m)
=8.0m/s /1.5s =(5.33m/s²)(110Kg)
= 5.33m/s² = 586N
13.a) b)
After correctin our test we read through the booklet on Gravitational Fields. Then we got 2 sheets, The Elevator Ride and Force and Weight Concept Development. We worked on the Elevator Ride lab for the rest of the class and we will finish it up on monday.
Have a good weekend!! The next scribe will be Nicole. : )
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