To solve this problem we will proceed to use Newton's second law for which the mass (m) multiplied by the acceleration (a) is defined as the Force (F) applied on a body, mathematically that is,
According to the statement for the first object, the acceleration is,
For the second object the acceleration is,
Solving for the mass of the second object,
Therefore the correct answer is D.
Answer:
a)
b)
c) t = 2.031s X = 1.52m
Explanation:
Let X1 be position of car A as a function of time and X2 be the position of car B as a function of time:
X1 = Xo1 + V1*t If we evaluate this expression at t=t1
S1 = Xo1 + V1*t1 Solving for Xo1 we get its initial position at t=0:
Xo1 = S1 - V1*t1
Similarly for car B:
Xo2 = S2 - V2*t2
Now, to find the instant when car B overtakes car A:
X1 = X2 Replacing their functions in time:
(S1 - V1*t1) + V1*t = (S2 - V2*t2) + V2*t Solving for t:
This is the instant when B reaches A
If we replace this expression in either X1 or X2 expression, we get that position: X1 = X2
If we evaluate these two expressions with the given values:
t = 2.031s and X = 1.52m
B) Temperature.......... Hope it helps, Have a nice day :)
Answer: Comparing infrared and ultraviolet, ''we can say that infrared has longer wavelength and lower photon energy''
Explanation:
The table is level and there are no other forces on the book, so the normal force is equal to the weight.
N = mg
N = (2.3 kg) (9.8 m/s²)
N = 22.5 N