Physics 100 – Assignment B – W23
20 marks
This is a group assignment (2 students per group). Both names should be clearly printed on top of the assignment.
Late assignments will be penalized as follows: up to 24 hours late – 25% deduction; more than 24 late, the assignment will not be accepted.
The assignments must be uploaded into the Assignment folder on eCentennial. Both members of the group must upload the assignment. Please print this document, complete the work in the spaces provided for each question, scan the solutions, and post them under the respective folder.
A piece of meat is thrown vertically upward, and a falcon is released at the same time. The piece of the meat reaches the maximum height after 2.26 seconds.
Find the initial velocity of the meat [2 marks]
How many seconds does it take to reach the maximum height? [2 marks]
Find the total time when the falcon catches the meat at a height 13.0 m while the meat is falling [2 marks]
A 12 kg trolley moving at 6.5 m/s is slowed down to 2.5 m/s in 12 m by applying some force. What is the net force applied to the trolley? [3 marks]
128 N force is needed to just start 25 kg block moving across the floor. Determine the coefficient of static friction. Draw FBD. [3 marks]
A 27 kg crate is pulled along the horizontal surface by a force of 85 N as shown. The coefficient of friction between the two surfaces is 0.23. Draw FBD.
Find the horizontal and vertical components of force. [1 mark]
Find the normal force [2 marks]
Find the friction [1 mark]
Find the horizontal acceleration of the crate [2 marks]
Find the time taken to move the crate by 12 m considering it starts from rest [2 marks]
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