Final answer:
The machine used a power of 1 watt to push the crate, calculated by dividing the work done (50J) by the time taken (50s).
Step-by-step explanation:
If a machine does 50J of work to push a crate 10 meters in 50 seconds, we can calculate the power used by the machine. Power is the rate at which work is done and is defined as work divided by time. The formula to calculate power is P = W/t, where P is power in watts (W), W is work in joules (J), and t is time in seconds (s).
Using this formula, we substitute the given values:
- Work done, W = 50J
- Time taken, t = 50s
Now, we calculate the power:
P = 50J / 50s = 1W
The machine used a power of 1 watt to push the crate.