Average speed is the ratio of total distance moved by Chi in total time interval
So here we will have
Total distance = 100 m + 400 m

Total time taken = 5 min + 15 min = 20 min

now by the formula of average speed we know that



so average speed will be 1.5 km/h
Answer:
A. Kinetic energies are equal.
Explanation:
The kinetic energy of the bodies will be equal since the mass and speed are the same.
Kinetic energy is the energy due to the motion of a body.
Mathematically;
K.E =
m v²
m is the mass
v is the speed
The kinetic energy is a scalar quantity with no regard for direction.
Answer:
blocks of ice are usually covered with cloth or sawdust while being stored
Answer: B. Mechanical Waves
Explanation:
Velocity = distance (m) /time (s)
convert kilometers to metres (132300), substitute into formula.
convert hours to seconds (18000), substitute into formula. it becomes,
132300 divided by 18000 = 7.35 M/S
always answer questions in the units given in the question.
to get m/s into km/h, multiply by 3.6, therefore it equals 24.46 km/h