Np Fysik Åk 9 [BEST]
Captain Granit shook his head. "Water fights back. That's and drag ."
"Lifting it too fast could snap the rope," the captain warned. " – force causes acceleration. Too much acceleration breaks things." 4. The rescue They used a hand-crank connected to a block-and-tackle. Alva felt the force in her arms. "This is mechanical advantage ," she said, sweating. "The rope pulls many times, so my force is multiplied." np fysik åk 9
Alva’s eyes lit up. "Wait, this is real physics. Let me think." Captain Granit shook his head
Milo groaned. "That sounds like a physics problem. I'm out." " – force causes acceleration
Slowly, the chest rose. When it broke the surface, Milo gasped. "It worked!"
Captain Granit smiled. "Good. Let’s start with , young navigator." 1. Energy – The invisible currency "The chest at the bottom has potential energy because it’s deep," the captain explained. "But we need to give it kinetic energy to move it up."
"That's how much energy we need to give the chest to lift it," she said. "Can't we just pull it straight up?" Milo asked.