Hello! There are many indicators to show a sign that a chemical reaction has occured. These are 3 as followed.
1. An odor is produced.
2. A change in temperature.
3. A color change.
Others can be a formation of a solid or a gas.
Answer:
20 m/s²
Explanation:
Applying,
a = Δv/Δt.................Equation 1
Where a = acceleration of the car, Δv = change in velocity of the car, Δt = change in time.
From the graph,
Given: Δv = (20-0) = 20m/s, Δt = (1-0) = 1 seconds
Substitute these values into equation 1
a = 20/1
a = 20 m/s²
Hence the car's acceleration from 0 to 1 second is 20 m/s²
The planets all formed from this spinning disk-shaped cloud, and continued this rotating course around the Sun after they were formed. The gravity of the Sun keeps the planets in their orbits. They stay in their orbits because there is no other force in the Solar System which can stop them.
