Answer:
Explanation:
Given:
a = 3.10 m/s^2
vf = 12.4 m/s
vi = -6.2 m/s
t = (vf - vi)/a
= (12.4 + 6.2)/3.1
= 6 s
displacement = (vf - vi)*t
= (12.4 + 6.2) * 6
= 111.6 m.
Answer:
25.05 m
Explanation:
Using newton's equation of motion.
v² = u²+2as ................. Equation 1
Where v = final velocity of the object, u = initial velocity of the object, a = acceleration of the object, s = displacement of the object.
make s the subject of the equation
s = (v²-u²)/2a............. Equation 2
Given: v = 12.4 m/s, u = -6.20 m/s, a = 3.10 m/s²
Substitute into equation 2
s = (12.4²-(-6.2)²)/(2×3.1)
s = (153.76-38.44)/6.2
s = 155.32/6.2
s = 25.05 m.
Hence the displacement = 25.05 m
