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so if it asks what change in momentum does the cart undergo, i write 25 N~s? i thought momentum was measured in kg~m/s.

if an impulse of 25 N~s results, how would one describe the change in momentum? how is that number related or indicative of the change in momentum? i could be way off. that's likely. thanks.

what must be known to figure out the angle of the slide to the hill? a slide is on a hill. the slide sits at a 10 degree slope. a 113.5 kg mass accelerates down the slide at 3 m/s squared. the coefficient of friction is .13. what do i need to figure out here before finding the angle...

that was beautiful. much thanks.

so an upward acceleration of say, one m/s2 would just be added to g? meaning total acceleration for f=ma would be 10.8?

how does the acceleration used in the formula f=ma change when the acceleration changes. you start at 9.8 m/s2. you get in an elevator or you move upward, changing the acceleration. how does acceleration due to gravity change? increase or decrease? thanks