MEDAL + FAN FOR RIGHT ANSWER!!! NEED HELP FAST

A ball with a mass of 5 kg is acted upon by force of 20 N. If the ball begins moving from a velocity of 0 m/s and accelerate for 2 seconds, what is its change in velocity?

A. 0 m/s
B. 2 m/s
C. 4 m/s
D. 8 m/s

Question

MEDAL + FAN FOR RIGHT ANSWER!!! NEED HELP FAST

A ball with a mass of 5 kg is acted upon by force of 20 N. If the ball begins moving from a velocity of 0 m/s and accelerate for 2 seconds, what is its change in velocity?

A. 0 m/s
B. 2 m/s
C. 4 m/s
D. 8 m/s

paxpolaris · Answer

F$$F=m \cdot a\ \implies a= \frac Fm$$

paxpolaris · Answer

$$a= {20 \over 5} = 4\ m /s^2$$

paxpolaris · Answer

$$a=  {\Delta v \over \Delta t}$$

paxpolaris · Answer

$$\Delta v = a \times \Delta t= 4 \times 2 = 8 m/s$$