Answer:
Force exerted on the car = 4,000 N
Explanation:
Mass of the car (m) = 2000 kg
Acceleration(a) = 2 m/sec²
By Newton's second law of motion,
F (force) = m a
Putting the values of m and a
= 2000 x 2 = 4,000 N
Answer:
A new substance is not formed.
Explanation:
Ice melting is not a chemical reaction because when an ice is melting there is no chemical change happening upon the ice. The water molecules are still the same, they are still water molecules.
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I wanna say A.
Not a 100% sure but this is what i think
hope it helps!
Answer:
The lowest energy of electron is the ground state.
Explanation:
Answer:
Explanation:
distance between ship A and B = 32 mile
Ship A velocity in south, dx/dt = -16 mph
Ship B is sailing toward east with speed, dy/st = 12 mph
time = 1 hour
rate of change of distance between them = ?
x be the distance travel after t time
X = 32 + x
Let distance between them be z
now, using Pythagoras theorem to calculate distance between ships after 1 hours
z² = x² + y²
z² = (32 + x)² + 12²
z² = (32 - 16)² + 12²
z = √400
z = 20 miles
now, calculation of rate of change of distnace
z² = (32 + x)² + y²
differentiating both side w.r.t. time
hence, the rate is the distance between them changing at the end of 1 hour is equal to