Block A of mass 2.00 kg and block B of mass 3.00 kg slide on a...
Block A of mass 2.00 kg and block B of mass 3.00 kg slide on a frictionless surface toward one another and collide. Before the collision, block A moves east with a speed of 3.00 m/s, block B moves south with a speed of 1.50 m/s. After the collision, block A moves 12 degrees west of south with a speed of 0.500 m/s. The two blocks do NOT stick together after the collision.
(a) What is the magnitude and direction of the final velocity of puck B?
(b) Is kinetic energy conserved during the collision? Justify your answer with a calculation.
(c) If the collision lasts for 75.0 ms, what is the magnitude and direction of the average force that block A exerts on block B during the collision?
Homework Answers
A block of mass m -2.00 kg collides head on with a block of mass m-...
A block of mass m -2.00 kg collides head on with a block of mass m- 10.0 kg initially at rest on a rough horizontal surface. The block m strikes m2 with a speed of 4.00 m/s. Immediately after the very brief inelastic collision, the 2.00 kg block bounces back with a speed of 1.20 m/s. Ignore the effect of friction during the collision. (a) 4pts.] Calculate the speed of the 10.0 kg block immediately after the collision. (b) 4...
Two hockey pucks (ma-1.20 kg and mg = 1.40 kg) slide on a flat sheet of...
Two hockey pucks (ma-1.20 kg and mg = 1.40 kg) slide on a flat sheet of frictionless ice and then collide with each other. The diagram below shows a top-down view of the ice. Initially, hockey puck A moves in the *x direction with speed 4.80 m/s, while hockey puck B moves in the +x direction with speed 2.30 m/s. After the collision, hockey puck A moves off at an angle of 23.5' above the +x axis and hockey puck...
Block A in (Figure 1) has mass 1.00 kg, and block B has mass 3.00 kg....
Block A in (Figure 1) has mass 1.00 kg, and block
B has mass 3.00 kg. The blocks are forced together,
compressing a spring S between them; then the system is
released from rest on a level, frictionless surface. The spring,
which has negligible mass, is not fastened to either block and
drops to the surface after it has expanded. The spring has force
constant 711 N/m and is initially compressed 0.225 m from its
original length.
a.What is the...
Two blocks are sliding across a horizontal frictionless tabletop. Block A has a mass of 5...
Two blocks are sliding across a horizontal frictionless tabletop. Block A has a mass of 5 kg, and it is sliding directly southward with a speed of 8 m/s. Block B has a mass of 7 kg, and it is sliding directly westward with a speed of 4 m/s. The blocks then collide and stick together. What is the speed of the new combined block after the collision?
Block 1, of mass m1 = 2.30 kg, moves along a frictionless air track with speed...
Block 1, of mass m1 = 2.30 kg, moves along a frictionless air track with speed v1 = 31.0 m/s. It collides with block 2, of mass m2 = 13.0 kg, which was initially at rest. The blocks stick together after the collision. A) Find the magnitude pi of the total initial momentum of the two-block system. B) Find vf, the magnitude of the final velocity of the two-block system C)What is the change ΔK=Kfinal−Kinitial in the two-block system's kinetic...
Puck A of mass 240-g is traveling due east with a speed, v_Ai=10 m/s, on a...
Puck A of mass 240-g is traveling due east with a speed, v_Ai=10
m/s, on a level, frictionless air table when it collides with puck
B of mass 160 g traveling at 40° south of west with a speed,
v_Bi=15 m/s, on the same table. (See the diagram below.) When the
pucks collide, they stick together via Velcro surfaces that line
the circular boundaries of both pucks. Find the magnitude and
direction of the momentum of the tandem of pucks...
Block 1, of mass m1 = 1.10 kg , moves along a frictionless air track with...
Block 1, of mass m1 = 1.10 kg , moves along a frictionless air track with speed v1 = 29.0 m/s . It collides with block 2, of mass m2 = 45.0 kg , which was initially at rest. The blocks stick together after the collision. (Figure 1) Find the magnitude pi of the total initial momentum of the two-block system. Find vf, the magnitude of the final velocity of the two-block system. What is the change ΔK=Kfinal−Kinitial in the...
An object (A) of mass mAA = 27.5 kg is moving in a direction that makes...
An object (A) of mass mAA = 27.5 kg is moving in a direction that makes angle of 56° south of east with a speed vAA = 5.00 m/s, while object (B) of mass mBB = 17.5 kg is moving due north with a speed vBB = 8.00 m/s. The two objects collide and stick together in a completely inelastic collision. Find the magnitude of the final velocity of the two-object system after the collision.
Two blocks are sliding across a horizontal frictionless tabletop. Block A has a mass of 5...
Two blocks are sliding across a horizontal frictionless tabletop. Block A has a mass of 5 kg, and it is sliding directly southward with a speed of 8 m/s. Block B has a mass of 7 kg, and it is sliding directly westward with a speed of 4 m/s. The blocks then collide and stick together. What is the speed of the new combined block after the collision? a) 2 m/s b) 4 m/s c) 6 m/s d) 8 m/s
A block of mass m1 = 1.70 kg moving at v1 = 2.00 m/sundergoes a completely...
A block of mass m1 = 1.70 kg moving at v1 = 2.00 m/sundergoes a completely inelastic collision with a stationary block of mass m2 = 0.300 kg . The blocks then move, stuck together, at speed v2. After a short time, the two-block system collides inelastically with a third block, of mass m3 = 2.40 kg , which is initially at rest. The three blocks then move, stuck together, with speed v3.(Figure 1) Assume that the blocks slide without...
A block of mass m -2.00 kg collides head on with a block of mass m- 10.0 kg initially at rest on a rough horizontal surface. The block m strikes m2 with a speed of 4.00 m/s. Immediately after the very brief inelastic collision, the 2.00 kg block bounces back with a speed of 1.20 m/s. Ignore the effect of friction during the collision. (a) 4pts.] Calculate the speed of the 10.0 kg block immediately after the collision. (b) 4...
Two hockey pucks (ma-1.20 kg and mg = 1.40 kg) slide on a flat sheet of frictionless ice and then collide with each other. The diagram below shows a top-down view of the ice. Initially, hockey puck A moves in the *x direction with speed 4.80 m/s, while hockey puck B moves in the +x direction with speed 2.30 m/s. After the collision, hockey puck A moves off at an angle of 23.5' above the +x axis and hockey puck...
Block A in (Figure 1) has mass 1.00 kg, and block
B has mass 3.00 kg. The blocks are forced together,
compressing a spring S between them; then the system is
released from rest on a level, frictionless surface. The spring,
which has negligible mass, is not fastened to either block and
drops to the surface after it has expanded. The spring has force
constant 711 N/m and is initially compressed 0.225 m from its
original length.
a.What is the...
Puck A of mass 240-g is traveling due east with a speed, v_Ai=10
m/s, on a level, frictionless air table when it collides with puck
B of mass 160 g traveling at 40° south of west with a speed,
v_Bi=15 m/s, on the same table. (See the diagram below.) When the
pucks collide, they stick together via Velcro surfaces that line
the circular boundaries of both pucks. Find the magnitude and
direction of the momentum of the tandem of pucks...
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