Physics Equations Points: 1 5) A solid sphere, solid cylinder, and a hollow pipe

Question

Physics Equations Points: 1 5) A solid sphere, solid cylinder, and a hollow pipe all have equal masses and radii and are of 5) uniform density. the three are released simultaneously at the top of an inclined plane and without slipping, which one will reach the bottom first? A) solid cylinder B) hollow pipe C) solid sphere D) They all reach the bottom at the same time. Points: 3 a 6) A truck of mass 12,000 kg is traveling at a speed of 13,5 m/s. A suv of mass 4200 kg has the 6) same momentum as the truck. the speed of the SUV. A) 34.6 m/s B) 4.73 m/s C) 14.7 m/s D) 10.1 m/s E) 38.6 m/s ints: 2 7) A bicycle wheel has an initial angular velocity of 1.70 rad/s If its angular acceleration is constant and equal to 0.44 rad/s2. Through what angle has the wheel turned between t 0 and t 2.80 s? A) 6.43 rad B) 6.48 rad. C) 4.12 rad D) 3.28 rad E) 2.09 rad 8) In an INELASTIC collision between two objects A) the kinetic energy of each object is conserved. B) the momentum of the system is conserved but the kinetic of the system is not conserved. energy the momentum of each object is conserved. C) D) both the momentum and the kinetic energy of the system are conserved. E) the kinetic energy of the system is conserved, but the momentum of the system is not conserved

Explanation / Answer

5. (D) same time, since alpha will be same

6. (E)

12000*13.5= 4200*x

so, x= 38.57 m/s

7.(B)

s= u*t+.5*a*t^2

so, s= 1.7*2.8+.5*.44*2.8^2= 6.4848 rad.

8. (B)

Related Questions

Navigate

• Browse (All)
• Browse P
• Subjects

---