Q8: A ball of mass 0.5 kg is dropped from a height h=2.0 m above the ground as shown in the figure. Find the speed of the ball when it is at a height y = 0.6 m above the ground. A. 4.2 m/s B. 5.2 m/s C. 6.1 m/s D. 2.8 m/s

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Q 8 please
Q8:
A ball of mass 0.5 kg is dropped from a height h=2.0 m above the
ground as shown in the figure. Find the speed of the ball when it is at
a height y = 0.6 m above the ground.
A. 4.2 m/s
B. 5.2 m/s
C. 6.1 m/s
D. 2.8 m/s
Q9:
A 6.0 kg block initially at rest is pulled to the right along a horizontal surface by a constant
horizontal force of 12 N. The surfaces in contact have a coefficient of kinetic friction of 0.15.
Find the speed of the block after it has moved 4.0 m.
A. 1.78 m/s
B. 1.46 m/s
C. 2.06 m/s
D. 2.30 m/s
Q10: A block having a mass of 1.0 kg is given an initial velocity VA-1.6 m/s to the right and collides
with a spring whose mass is negligible and whose force constant is 40 N/m as shown
Assuming the surface to be frictionless, calculate the maximum compression of the spring
after the collision.
A. 25 cm
B. 22 cm
C. 28 cm
D. 19 cm
Q11: Two blocks are connected by a light string that passes over a frictionless pulley as shown. The
block of mass m₂ = 1.25 kg lies on a horizontal surface and is connected to a spring of force
constant 30 N/m. The system is released from rest when the spring is unstretched. The hanging
block of mass m₂ = 0.5 kg falls a distance of 0.10 m before coming to rest. Calculate the
coefficient of kinetic friction between the mass m, and the horizontal surface.
A. 0.43
B. 0.37
C. 0.32
D. 0.28
Reference
Transcribed Image Text:Q8: A ball of mass 0.5 kg is dropped from a height h=2.0 m above the ground as shown in the figure. Find the speed of the ball when it is at a height y = 0.6 m above the ground. A. 4.2 m/s B. 5.2 m/s C. 6.1 m/s D. 2.8 m/s Q9: A 6.0 kg block initially at rest is pulled to the right along a horizontal surface by a constant horizontal force of 12 N. The surfaces in contact have a coefficient of kinetic friction of 0.15. Find the speed of the block after it has moved 4.0 m. A. 1.78 m/s B. 1.46 m/s C. 2.06 m/s D. 2.30 m/s Q10: A block having a mass of 1.0 kg is given an initial velocity VA-1.6 m/s to the right and collides with a spring whose mass is negligible and whose force constant is 40 N/m as shown Assuming the surface to be frictionless, calculate the maximum compression of the spring after the collision. A. 25 cm B. 22 cm C. 28 cm D. 19 cm Q11: Two blocks are connected by a light string that passes over a frictionless pulley as shown. The block of mass m₂ = 1.25 kg lies on a horizontal surface and is connected to a spring of force constant 30 N/m. The system is released from rest when the spring is unstretched. The hanging block of mass m₂ = 0.5 kg falls a distance of 0.10 m before coming to rest. Calculate the coefficient of kinetic friction between the mass m, and the horizontal surface. A. 0.43 B. 0.37 C. 0.32 D. 0.28 Reference
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