Question

select the correct answer from each drop - down menu. blake and sandra are having a rummage sale. blake drags 3 boxes a distance of 10 meters each. he exerts a force of 25 newtons on each box. sandra drags 4 boxes a distance of 12 meters each. she exerts a force of 15 newtons on each box. blake takes 2 minutes to complete his work. sandra takes 4 minutes. blake does drop - down work than sandra. blakes power is drop - down than sandras power (hint: use w = fd and p = \frac{w}{t}.)

Explanation:

Step1: Calculate Blake's work

Blake: 3 boxes, F=25N, d=10m. W=3×25×10=750J

Step2: Calculate Sandra's work

Sandra: 4 boxes, F=15N, d=12m. W=4×15×12=720J. Blake's W> Sandra's

Step3: Calculate Blake's power

Blake's t=2min=120s. P=750/120=6.25W

Step4: Calculate Sandra's power

Sandra's t=4min=240s. P=720/240=3W. Blake's P> Sandra's

Answer:

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