Hossein is a weightlifter. His best lift in training is a bar with a mass of 250kg. He does 5000 j of work on the bar with a mass of 250kg when he lifts it. The gravitational field strength (g) on earth is 10 N/kg

I am trying to calculate the weight of this 250kg mass, and how high Hossein lifts the bar.

Weight = 2,500N (I think) but can’t work out how to get the height lifted in metres..

Can anyone help in working this out, showing workings so I can work it through with my daughter.

Many thanks

Question 9: use your experiences from questions 6, 7, and 8 to you state a general rule for identifying the three declination ranges given the observer's latitude.

Abatter hits the baseball a with an initial velocity of v0 = 110 ft/sec directly toward fielder b at an angle of 23° to the horizontal; the initial position of the ball is 2.2 ft above ground level. fielder b requires 0.44 sec to judge where the ball should be caught and begins moving to that position with constant speed. because of great experience, fielder b chooses his running speed so that he arrives at the “catch position” simultaneously with the baseball. the catch position is the field location at which the ball altitude is 8.4 ft. determine the velocity of the ball relative to the fielder at the instant the catch is made.

Jessie ran 5000 meters from the cops and an average speed of 6 meters / second before he got caught . how long did he run?