关于work 和 powera 150kg satellite in deep dark space fires a thruster that provides a net force 10N of thrust.how far has the satellite traveled by the time the velocity has changed by 15m/s?ANSWER:d=1688m.

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关于work 和 powera 150kg satellite in deep dark space fires a thruster that provides a net force 10N of thrust.how far has the satellite traveled by the time the velocity has changed by 15m/s?ANSWER:d=1688m.
关于work 和 power
a 150kg satellite in deep dark space fires a thruster that provides a net force 10N of thrust.how far has the satellite traveled by the time the velocity has changed by 15m/s?ANSWER:d=1688m.

关于work 和 powera 150kg satellite in deep dark space fires a thruster that provides a net force 10N of thrust.how far has the satellite traveled by the time the velocity has changed by 15m/s?ANSWER:d=1688m.
卫星质量150kg,净推力10N（推力减去重力,合力）
因此,加速度是a=10/150=1/15m/s^2
根据vt^2-v0^2=2as,其中vt=15m/s, v0=0, a=1/15m/s^2
解得s=1687.5m
如果根据功计算：重力对机械能变化没有贡献,推力有贡献为机械能增加.
因此,净推力的功=（F-G）*S,等于动能变化量1/2*mv^2,
联立,代入数值：10*S=1/2*150*15*15,解得S=1687.5m

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