Answer: 5.8 kg m/s
Identify the given information.
m = 0.145 kg
v = 40.0 m/s
Choose which formula you should use. In this case, you are finding momentum.
p = mv, where p is momentum.
Substitute and solve.
p = 0.145 kg x 40.0 m/s
p = 5.8 kg m/s
Answer:
12N
Explanation:
given- mass, acelation
Fnet=ma= .16kg*75m/s2
Fnet=12 N only force no friction given.
Answer:
v = √(10gh/7)
Explanation:
Initial gravitational energy = final rotational energy + kinetic energy
PE = RE + KE
mgh = ½ Iω² + ½ mv²
For a solid sphere, I = ⅖ mr².
For rolling without slipping, ω = v/r.
mgh = ½ (⅖ mr²) (v/r)² + ½ mv²
mgh = ⅕ mv² + ½ mv²
mgh = 7/10 mv²
10/7 gh = v²
v = √(10gh/7)
