Answer:
Work=1800 J
Speed=3m/s
Explanation:
Work is product of force and distance moved, expressed as
W=Fd
Where F is force and d is distance in meters
Substituting 300 N for force and 6 m for d then
W=300*6=1800 J
Kinetic energy is given by
KE=½mv²
Where m is the mass and v is velocity
Here, KE=W hence
W=½mv²
Making v the subject then
[tex]v=\frac {2W}{m}[/tex]
Substituting 1800J for W and 400 kg for m then
[tex]v=\frac {2*1800}{400}=3m/s[/tex]
Therefore, velocity is 3 m/s
