Answer:
v=u+at is the first equation of motion. In this v=u+at equation, u is initial velocity.
Answer:
Explanation:
Kinetic energy generated = work done by force = force x displacement
= 3 x 7 = 21 J
Answer it will move slower:
Explanation: cause the force that’s opposite of it
They’re falling toward earth & moving forward at about the same velocity. because the downward and forward forces are nearly equal, the astronauts are not pulled in any specific direction, so they float . <span>
</span>
Answer:
size of insect = wavelength = 16.1 mm
Explanation:
Since the bat can detect the size of small insects which are of size equal to the wavelength of sound in air
So here we can say that the wavelength of sound is the ratio of speed of sound and its frequency
here we know that
speed of sound in air is 536 m/s
frequency of sound is 33.3 kHz
so here we can say



