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Questions in physics

[Terjawab] Is the Sun considered a star?

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[Terjawab] A motorcycle stunt driver zooms off the end of a cliff at a speed of 30 meters per second. If he lands after 0.75 seconds, what is the height of the cliff?

[Terjawab] How much force in newtons is required to accelerate a 5 kg iron ball at a rate of 1 m/s²?

[Terjawab] A boy rides on a pony that is walking at a constant velocity. The boy leans over to one side, and a scoop of ice cream falls from his ice cream cone. Describe the path of the scoop of ice cream as seen by the child and his parents.

[Terjawab] Why is honesty especially important in a scientist when the results of an experiment go against predictions?

[Terjawab] Jaiden is writing a report about the structure of the atom. In her report, she says that the atom has three main parts and two subatomic particles. Do you agree with her? Why or why not?

[Terjawab] Some properties, such as mass, depend on how much matter is present. Other properties, such as malleability, remain the same no matter how much matter is present. Which of these choices is a physical property of the element potassium that remains the same no matter how much matter is present? A. Melting point B. Volume C. Flammability D. Reactivity

[Terjawab] Which of these is a process in which the atmosphere does not play any role? A. Formation of snow B. Evaporation of water C. Transpiration in plants D. Erosion of soil by water

[Terjawab] A packet is dropped from a stationary helicopter, hovering at a height 'h' from the ground level, and reaches the ground in 12 seconds. Calculate: 1) The value of 'h' (displacement) 2) The final velocity of the packet on reaching ground level Assume the acceleration due to gravity is [tex]9.8 \, \text{m/s}^2[/tex]. Please show how you derived your answers.