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(Mon) Quiz Today – No warm up

(Mon) Quiz Today – No warm up. (Tue) A ball is dropped from the edge of the table. If the mass of the ball is 150 g, and the table is 1.2 m tall, how much time does it take for the ball to hit the ground? (5 min / 5 pts).

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(Mon) Quiz Today – No warm up

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  1. (Mon) Quiz Today – No warm up

  2. (Tue) A ball is dropped from the edge of the table. If the mass of the ball is 150 g, and the table is 1.2 m tall, how much time does it take for the ball to hit the ground?(5 min / 5 pts)

  3. (Tue) A ball is dropped from the edge of the table. If the mass of the ball is 150 g, and the table is 1.2 m tall, how much time does it take for the ball to hit the ground?(5 min / 5 pts) Δy = vit + ½at² 1.2 m = (0m/s)(t)+(0.5)(9.81m/s²)(t²) N/A 1.2 1.2 m = 0 + (4.905m/s²)(t²) N/A 0 (1.2 m)/(4.905 m/s²) = t² N/A (0.2446 s²) = t² N/A 9.81 (0.2446 s²)½ = t ??? 0.15 t = 0.49 s

  4. (Wed) A ball is rolling along a frictionless surface. If the mass of the ball is 150 g, and has a velocity of 10 cm/s, how far does the ball roll in 0.49 seconds?(5 min / 5 pts)

  5. (Wed) A ball is rolling along a frictionless surface. If the mass of the ball is 150 g, and has a velocity of 10 cm/s, how far does the ball roll in 0.49 seconds?(5 min / 5 pts) Δx = vit + ½at² N/A ??? Δx = (10cm/s)(0.49s) + (0.5)(0m/s²)(0.49s²) 10 N/A N/A N/A 0 Δx = 4.9 cm + 0 0.49 0.15 Δx = 4.9 cm

  6. (Thu) A ball is rolled over the edge of the table. If the mass of the ball is 150 g, the table is 1.2 m tall and the ball has a horizontal velocity of 10 cm/s, how far away from the table does the ball hit? (8 min / 8 pts)

  7. (Thu) A ball is rolled over the edge of the table. If the mass of the ball is 150 g, the table is 1.2 m tall and the ball has a horizontal velocity of 10 cm/s, how far away from the table does the ball hit? (8 min / 8 pts) ‘y’ direction then ‘x’ direction Δy = vit + ½at² ??? 1.2 1.2 m = (0m/s)(t)+(0.5)(9.81m/s²)(t²) (0.2446 s²) = t² 10 0 (0.2446 s²)½ = t = 0.49 s Δx = vit + ½at² 0 9.81 Δx = (10 cm/s)(0.49s)+(0.5)(0m/s²)(0.49s)² ??? 0.49 Δx = (10 cm/s)(0.49s) 0.15 Δx = 4.9 cm

  8. (Fri) You hit a golf ball off a cliff horizontally at 80 m/s. If the ball lands 471 m away from the base of the cliff, how tall was the cliff?(8 min / 8 pts)

  9. (Fri) You hit a golf ball off a cliff horizontally at 80 m/s. If the ball lands 471 m away from the base of the cliff, how tall was the cliff?(8 min / 8 pts) ‘x’ direction first – then ‘y’ direction Δx = vit + ½at² 471m = (80m/s)(t)+(0.5)(0m/s²)(t)² 471 ??? (471m)/(80m/s)= t 80 0 5.89 s = t 80 ??? Δy = vit + ½at² 0 9.81 Δy=(0m/s)(5.89s)+(0.5)(9.81m/s²)(5.89s)² ??? 5.89 Δy = (0.5)(9.81m/s²)(34.69s²) ??? Δy = 170.16 m

  10. End of Week Procedures: • Add up all the points you got this week • Put the total number of points at the top of your page (out of 26 points) • List any dates you were absent (and why) • Make sure your name and period is on the top of the paper • Turn in your papers

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