The formula of Momentum should be used; P=mv, we’ve known the number of the momentum(P) and mass(m), and then we can find velocity(v).
Answer:
(a) 388 newton
(b) 17.15 m/s
Explanation:
r = 30 m
v = 10 m/s
m = 60 kg
(a) Let N be the normal reaction.
At the bump
N = mg - mv^2 / r
N = 60 x 9.8 - 60 x 10 x 10 / 30 = 588 - 200 = 388 newton
(b) Then the contact loose, N = 0
So, mg = mv^2 / r
v^2 = r x g = 30 x 9.8 = 294
v = 17.15 m/s
Answer:
calculate the slope of the line and the slope is equal to the resistance of the circuit m=R
Explanation:
One method for measuring the resistence is to use ohm's law
V = R I
y = mx +b
b=0
m = R
Where we measure various values of voltage and current, with these values we can make a graph of V vs I where we calculate the slope of the line and the slope is equal to the resistance of the circuit
Answer:
D.
Explanation:
Specifically, Special Relativity showed us that space and time are not independent of one another but can be mixed into each other and therefore must be considered as the same object, which we shall denote as space-time. The consequences of space/time mixing are: time dilation. and length contraction.
The force needed to overcome sliding friction is more than the force needed to overcome rolling friction or static or even fluid