A 20-kg object sitting at rest is struck elastically in a head-on collision with a 10-kg object initially moving at +3.0 m/s. Find the final velocity of the 20 kg object after the Collison.
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A 20-kg object sitting at rest is struck elastically in a head-on collision with a 10-kg object initially moving at +3.0 m/s. Find the final velocity of the 20 kg object after the Collison.
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- Block A (m=2.5kg) and Block B(m=3.5 kg, to the right of A) move on a frictionless horizontal surface. Initially, Blocl A is moving to the right st 6 m/s and Block B moves to the left with unknown speed. They collide head-on in a perfectly elastic collision. After the collision, block B moves to the right with a speed of 4.5 m/s. A) Find the speed of block B before the collision B)What is the velocity (magnitude and direction) of block A after collision?A 24.8 g object moving to the right at21.3 cm/s overtakes and collides elasticallywith a 14.8 g object moving in the same direction at 18.6 cm/s. Find the velocity of the 24.8 g object after the collision.Answer in units of cm/s. Find the velocity of the 14.8 g object after the collision.Answer in units of cm/s.A 2.00-g particle moving at 5.40 m/s makes a perfectly elastic head-on collision with a resting 1.00-g object. (Assume the 2.00-g particle is moving in the positive direction before the collision. Indicate the direction with the sign of your answer.) (a) Find the velocity of each particle after the collision. 2.00-g particle 1.00-g particle m/s m/s (b) Find the velocity of each particle after the collision if the stationary particle has a mass of 10.0 g. 2.00-g particle 10.0-g particle m/s m/s (c) Find the final kinetic energy of the incident 2.00-g particle in the situations described in parts (a) and (b). KE in part (a) KE in part (b) J J In which case does the incident particle lose more kinetic energy? case (a) case (b)
- A block of mass 1.15 kg is placed on a frictionless floor and initially pushed northward, whereupon it begins sliding with a constant speed of 3.78 m/s. It eventually collides with a second, stationary block, of mass 4.98 kg, head-on, and rebounds back to the south. The collision is 100% elastic. What will be the speeds of the 1.15-kg and 4.98-kg blocks, respectively, after this collision? 1.87 m/s and 1.89 m/s 1.89 m/s and 2.13 m/s 2.36 m/s and 1.42 m/s 1.42 m/s and 2.36 m/sDo all parts correctly.A block of mass 1.57 kg is placed on a frictionless floor and initially pushed northward, where upon it begins sliding with a constant speed of 5.16 m/s. It eventually collides with a second, stationary block, of mass 3.01 kg, head-on, and rebounds back to the south. The collision is 100% elastic. What will be the speeds of the 1.57-kg and 3.01-kg blocks, respectively, after this collision? 1.62 m/s and 3.54 m/s 3.54 m/s and 1.62 m/s 2.06 m/s and 2.58 m/s 0.65 m/s and 2.10 m/s
- Two blocks, m1 = 1.50 kg and m2 = 3.00 kg, are traveling to the right along africtionless surface. Block m1, moving 4.00 m/s, catches up to block m2, moving 2.50 m/s, and the two blocks undergo an elastic collision.(a) Determine the velocity of each block after the collision. (b) Prove that the collision was, in fact, elastic.A 0.30-kg puck, initially at rest on a frictionless horizontal surface, is struck by a 0.20-kg puck that is initially moving along the x-axis with a velocity of 5.8 m/s. After the collision, the 0.20-kg puck has a speed of 3.5 m/s at an angle of ? = 53° to the positive x-axis (a) Determine the velocity of the 0.30-kg puck after the collision. magnitude m/s direction ° from the positive x-axis (b) Find the fraction of kinetic energy lost in the collision. |ΔKE| KEi = %A block of mass 1.04 kg is placed on a frictionless floor and initially pushed northward, whereupon it begins sliding with a constant speed of 3.02 m/s. It eventually collides with a second, stationary block, of mass 4.88 kg, head-on, and rebounds back to the south. The collision is 100% elastic. What will be the speeds of the 1.04-kg and 4.88-kg blocks, respectively, after this collision? 1.06 m/s and 1.96 m/s 1.71 m/s and 1.51 m/s 0.98 m/s and 1.74 m/s 4 1.96 m/s and 1.06 m/s
- A 0.150-kg glider is moving to the right on a frictionless, horizontal air track with a speed of 0.80 m/s. It has a head-on col- lision with a 0.300-kg glider that is moving to the left with a speed of 2.20 m/s. Find the final velocity (magnitude and direction) of each glider if the collision is elastic.A 70.0 kg ice hockey goalie, originally at rest, has a 0.280 kg hockey puck slapped at him at a velocity of 41.5 m/s. Suppose the goalie and the puck have an elastic collision, and the puck is reflected back in the direction from which it came. What would the final velocities of the goalie and the puck, respectively, be in this case? Assume that the collision is Ugoalie and Upuck completely elastic. Ugoalie Upuck= 0.14 Incorrect -5.38 Incorrect m/s m/sA 0.15 kg baseball is struck by a bat with a contact time of 0.008 seconds. The ball leaves the bat with a speed of 45 m/s (parallel to the ground). What is the force imparted on the baseball by the bat? Assume this is an elastic collision.