Answer:


Explanation:
Let the mass of the other car is "m" and its kinetic energy is

now the mass of the first car is two and half times and its kinetic energy is half that of other car
so we will have



now speed of both cars is increased by value of 9 m/s
so now we will have same kinetic energy for both cars





so speed of first car is


I'm pretty sure it's Inertia and Gravity
Inertia deals with an object's tendency to stay in motion at a constant speed.
Hopefully this helped and good luck.
Answer: Heat energy is transferred from warmer objects to cooler objects.
Explanation:
Answer:
It is formed by a horizontal number line, called the x-axis, and a vertical number line, called the y-axis.
Explanation:
Answer:
Time will be 19 ms so option (a) is correct option
Explanation:
We have given that mass of wire m = 50 gram = 0.5 kg
Frequency f = 810 Hz
Wavelength = 0.4 m
Velocity is given by

Amplitude is given as d = 6 m
So time 
So option (a) is correct option