A car moving south speeds up from 10 m/s to 40 m/s in 15 seco O 2 m/s2
15 m/s2
O 30 m/s2
50 m/s2
What is the cars acceleration?

low freq = 100 mhz

low wavelength =101.7m

length = 3x10^8/freq

the minimum constant speed at which she can catch the train is 2.7 m/s

given:

acceleration = 0.6

time = 4.5 s

to find:

velocity = ?

formula used:

from 1st kinematic equation we get,

v = u + at

u = initial speed of train = 0 m/s

v = final speed of the train

a = acceleration of the train

t = time

solution:

from 1st kinematic equation we get,

v = u + at

u = initial speed of train = 0 m/s

v = final speed of the train

a = acceleration of the train

t = time

v = 0 + (0.6 × 4.5)

v = 2.7 m/s

the minimum constant speed at which she can catch the train is 2.7 m/s

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b. a lightning bug, plug of grass, and a worm