Q#1 (A) A 0.145 kg baseball travelling at 35.2m/s is stopped in0.163s by a catch
ID: 1671890 • Letter: Q
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Q#1 (A) A 0.145 kg baseball travelling at 35.2m/s is stopped in0.163s by a catchers mitt.(a) what is the average acceleration ofthe ball? (b) what is the average force on the cathers mitt? (B) A 0.14 kg baseball with an initial speed of 28m/srebounds with a speed of 34 m/s after being stuck by a bat.the duration the contact between the ball and batt was 2.1*10base 10-3. (a) what was the change in momentum (impuse) of theball?(b) what was the average force between the ball and thebatt? (C))A 78kg ice hockey player standing on a frictionless sheetof ice throws a 6.0kg bowling ball horizontally with a speed of 3.0m/s. with what speed does the hockey recoil? (D) A 0.20kg model railroad car moving with a speed of 0.24m/sis struck from behind by an 0.42 kg model locomotive moving alngthe same line of track with a speed of 0.52 m/s . if they sticktogether after the collision, what is theirvelocity? Q#1 (A) A 0.145 kg baseball travelling at 35.2m/s is stopped in0.163s by a catchers mitt.(a) what is the average acceleration ofthe ball? (b) what is the average force on the cathers mitt? (B) A 0.14 kg baseball with an initial speed of 28m/srebounds with a speed of 34 m/s after being stuck by a bat.the duration the contact between the ball and batt was 2.1*10base 10-3. (a) what was the change in momentum (impuse) of theball?(b) what was the average force between the ball and thebatt? (C))A 78kg ice hockey player standing on a frictionless sheetof ice throws a 6.0kg bowling ball horizontally with a speed of 3.0m/s. with what speed does the hockey recoil? (D) A 0.20kg model railroad car moving with a speed of 0.24m/sis struck from behind by an 0.42 kg model locomotive moving alngthe same line of track with a speed of 0.52 m/s . if they sticktogether after the collision, what is theirvelocity?Explanation / Answer
A a, a=-35.2/0.163=-215.95 m/s^2 b,F=a*m=-31.3 N B a, M=0.14*(34-28)=0.84 kgm/s b,F=M/t=0.84/2.1*10^-3=400 N C V=6*3/78=0.23 m/s D V=(0.2*0.24+0.42*0.52)/(0.2+0.42)=0.4297 m/s
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