A stone is thrown straight up. What is its acceleration on the way down?

What will be an ideal response?


9.8 m/s2 downward

Physics & Space Science

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What will be an ideal response?

Physics & Space Science

A hornet circles around a pop can at increasing speed while flying in a path with a 12-cm diameter. We can conclude that the hornet's wings must push on the air with force components that are

a. straight down. b. down and inwards. c. down and outwards. d. down and backwards. e. down, backwards and outwards.

Physics & Space Science

Which of the following is one of the drawbacks of the automobile engine?

A) CO2 is injected into the atmosphere B) CO is injected into the atmosphere C) the internal combustion engine has none of these drawbacks D) the internal combustion engine has all of these drawbacks E) low efficiency

Physics & Space Science

A 25-kg block on a horizontal surface is attached to a light spring (force constant = 8.0 kN/m). The block is pulled 10 cm to the right from its equilibrium position and released from rest. When the block has moved 2.0 cm toward its equilibrium position, its kinetic energy is 12 J. What is the change in mechanical energy caused by the frictional force on the block as it moves the 2.0 cm?

a. -4.0 J b. -3.5 J c. -2.4 J d. -2.9 J e. -15 J

Physics & Space Science