Physics 1401

Question 1. As shown above, the two 100-N weights are attached to a spring scale. The scale reads a value (in N) of

(a) 0     (b) 10     (c) 20     (d) 100     (e) 200

 

 

Question 2. Two carts on wheels have a spring compressed between them. One cart is twice as massive as the other. When released, the speed of the heavier cart (with respect to v_L the speed of the lighter cart) will be

(a) 0     (b) v_L     (c) 2v_L     (d) v_L/2     (e) 4v_L

 

 

Question 3. If you stand on a skateboard next to a wall and then push on the wall to your right with a force of 60 N, the wall exerts a force (in N) on you of

(a) 0     (b) 60 right     (c) 60 left     (d) 120 right     (e) 120 left

 

 

Question 4. If your mass plus the skateboard from question 3 is 60 kg, then your acceleration (in m/s²) is

(a) 1 left    (b) 2 right     (c) 3 right     (d) 5 left     (e) 10 right

 

 

Question 5. If raindrops fall vertically at 4 m/s and you run horizontally at 3 m/s, then the speed (in m/s) that the raindrops hit your face is

(a) 0     (b) 1     (c) 2     (d) 5     (e) 7

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