Answer:
0.495m
Explanation:
The kinetic energy of the stone will be equal to the work done by the spring
Mathematically;
W = KE
1/2ke² = 1/2mv²
ke² = mv²
k is the spring constant = 150N/m
e is the extension
m is the mass = 0.015kg
v is the velocity = 70m/s
Substitute
150e² = 1/2 * 0.015 * 70²
150e² = 36.75
e² = 36.75/150
e² = 0.245
e = √0.245
e = 0.495m
Hence the extension of the catapult is 0.495m
It depends on the type of interference.
For constructive interference, add the amplitudes to get |35 + 41| = 76 units.
For destructive, subtract them |35 - 41| = 6 units
The thermal energy of an object is the energy contained in the motion and vibration of its molecules. Thermal energy is measured through temperature. The energy contained in the small motions of the object's molecules can be broken up into a combination of microscopic kinetic energy and potential energy.
The position of the particle when it changes direction is x = 3.0 m
Explanation:
The position of the particle is given by the equation
In order to determine its position when it changes direction, we need to find the time t at which the velocity of the particle becomes zero.
The velocity of the particle si given by the derivative of the position, therefore:
The velocity is zero when:
And therefore, the position at t = 0.41 s is
Learn more about position and velocity:
brainly.com/question/5248528
#LearnwithBrainly
Answer:
Average speed will be 30.30 m/sec
Explanation:
We have distance d = 10 km
Time to reach university to home = 20 min
We know that 1 hour = 20 min
So 20 minute
We have to find average speed
We know that distance = speed × time
So
So the average speed will be 30.30 m/sec