1. The spring is storing
1/2 (240 N/m) (0.40 m)² = 19.2 J ≈ 19 J
of potential energy.
2. When the spring is compressed by 0.30 m, it is storing
1/2 (240 N/m) (0.30 m)² = 10.8 J
so there was a loss of 19.2 J - 10.8 J = 8.4 J.
3. The spring is storing
1/2 (150 N/m) (0.80 m)² = 48 J
of potential energy.
4. Stretching the spring by 0.20 m more has it storing
1/2 (150 N/m) (1.0 m)² = 75 J
so that the extra weight adds 75 J - 48 J = 27 J of energy.
Answer:
In the equation, d=vi*t+1/2*a*t^2, you can see that this is a quadratic with respect to time, so it follows a parabolic motion
Explanation:
Answer:
See below ~
Explanation:
Part (a) :
We can say a body is in uniform acceleration if the acceleration of the object remains constant with respect to time throughout its motion.
Part (b) :
We can say a body is non-uniform acceleration if the acceleration of the body varies with respect to time throughout its motion.
Answer:
a = 2.5 [m/s²]
Explanation:
To solve this problem we must use the following equation of kinematics.
where:
Vf = final velocity = 25 [m/s]
Vo = initial velocity = 0 (star from the rest)
a = acceleration [m/s²]
t = time = 10 [s]
25 = 0 + (a*10)
a = 25/10
a = 2.5 [m/s²]
