Answer:
(1) 2.25m/s^2
(2) 45.6m
Explanation:
(1) A car accelerates uniformly from 12m/s to 39m/s in 12 seconds
Therefore the average acceleration can be calculated as follows
a = 39-12/12
a = 27/12
a= 2.25m/s^2
(2) A butterfly is flying at 4m/s , it accelerates uniformly at 1.2 m/s for 6 seconds
u= 4
a= 1.2
t= 6
Therefore the distance can be calculated as follows
S= ut + 1/2at^2
= 4×6 + 1/2 × 1.2 × 6^2
= 24 + 1/2 × 1.2 × 36
= 24 + 1/2 × 43.2
= 24 + 21.6
S = 45.6m
Hence the butterfly travels at 45.6m
Answer:
Light are required on every trailer
Explanation:
Answer:
Faraday made his first discovery of electromagnetism in 1821. He took the work of Oersted and Ampère on the magnetic properties of electrical currents as a starting point and in 1831 achieved an electrical current from a changing magnetic field, a phenomenon known as electromagnetic induction.
Explanation:
The correct answer for this question would be an EARTHQUAKE. What happens when two plates bordering each other suddenly move and release energy is an earthquake. When these plates slip one another and energy is released, this results in an earthquake. Hope this answer helps.
Answer: The kinetic energy is 300 joules
Explanation:
The question can be translated to:
The kinetic energy of a mass of 6kg that has a velocity of 10m/s:
Now, the kinetic energy can be written as:
k = (1/2)*m*v^2
where m is the mass and v is the velocity, we can replace the values:
k = (1/2)*6kg*(10m/s)^2 = 300 j
The kinetic energy is 300 joules
