What does Newton's first law say that object will tend to do?
If a moving object is losing momentum as time passes, then what does Newton's second law tells us is acting on the object?
____________________ Calculate the force required to bring a marble with a momentum p of 210 g cm/s to a stop in 0.5 seconds.
____________________ When all 66 kilograms of me falls off a RipStik, I accelerate towards the ground at 9.8 m/s² and then I hit the ground, exerting a force of 1500 Newtons on the ground. Calculate the counter-force that the ground exerts on me.
____________________ An elastic band stretches (displaces) a distance x of 5 cm when an 80 gram-force force f is applied. Calculate Hooke's constant k for the elastic.
____________________ Presume that the elastic band in the above problem is Hookean, that is, it is a linear elastic material. What will be the displacement x when a 200 gram-force force f is applied?
In the table below, a) Calculate the velocity between the first and second columns, b) the velocity between the third and fourth column, c) the acceleration from five to fifteen seconds, and d) the force the rider exerted.
time (s)
distance (m)
velocity (m/s)
acceleration (m/s²)
mass (kg)
force (N)
0.0
0.0
a)
c)
17.5
d)
5.0
2.5
10.0
10.0
b)
15.0
22.5
Why does the yurt circle have to be a yurt circle, not a yurt line? Your answer will be marked in part on correct, clear, and concise use of the terms in section five on Newton's law.
Equations
[ d = ѵt ]
[ ѵ = at ]
[ d = ½at² ]
[ d = ½gt² ]
[ ]
[ p = mѵ ]
[ GPE = mgh ]
[ KE = ½mѵ² ]
[ ]
[ F = ma ]
[ F = −kx ]