If a ball is thrown vertically upwards with a velocity of 40 m - s- assuming g -10 m - s 2 then what will be the velocity of the ball after two seconds-A- 15 m - sB- 28 m - sC- 25 m - sD- 20 m - s

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Equation of Motion of Free Fall

If a ball is ...

Question

If a ball is thrown vertically upwards with a velocity of 40 $\frac{m}{s}$ , assuming $(g = 10 \frac{m}{s^{2}})$ then what will be the velocity of the ball after two seconds?

15 m/s

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28 m/s

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25 m/s

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20 m/s

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Solution

The correct option is D
20 m/s

According to the 1^st equation of motion, v = u - gt.
Here, initial velocity, u = 40 $\frac{m}{s}$
g = 10 $\frac{m}{s^{2}}$
Time, t = 2 sec
v = 40 - 10(2) = 20 $\frac{m}{s}$ .

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If a ball is thrown vertically upwards with a velocity of 40ms, assuming (g=10ms2) then what will be the velocity of the ball after two seconds?

The correct option is D 20 m/s According to the 1st equation of motion, v = u - gt. Here, initial velocity, u = 40ms g = 10 ms2 Time, t = 2 sec v = 40 - 10(2) = 20ms.

If a ball is thrown vertically upwards with a velocity of 40 $\frac{m}{s}$ , assuming $(g = 10 \frac{m}{s^{2}})$ then what will be the velocity of the ball after two seconds?

The correct option is D
20 m/s

According to the 1^st equation of motion, v = u - gt.
Here, initial velocity, u = 40 $\frac{m}{s}$
g = 10 $\frac{m}{s^{2}}$
Time, t = 2 sec
v = 40 - 10(2) = 20 $\frac{m}{s}$ .