is the ramp horizontal or at an angle?

is the ramp horizontal or at an angle?

is the ramp horizontal or at an angle?

is the ramp horizontal or at an angle?

is the ramp horizontal or at an angle?

is the ramp horizontal or at an angle?

is the ramp horizontal or at an angle?

is the ramp horizontal or at an angle?

is the ramp horizontal or at an angle?

is the cart speeding up, slowing down, or staying at the same speed?

is the cart speeding up, slowing down, or staying at the same speed?

is the cart speeding up, slowing down, or staying at the same speed?

is the cart speeding up, slowing down, or staying at the same speed?

is the cart speeding up, slowing down, or staying at the same speed?

is the cart speeding up, slowing down, or staying at the same speed?

is the cart speeding up, slowing down, or staying at the same speed?

is the cart speeding up, slowing down, or staying at the same speed?

is the cart moving toward the detector or away?

is the cart moving toward the detector or away?

is the cart moving toward the detector or away?

is the cart moving toward the detector or away?

is the cart moving toward the detector or away?

is the cart moving toward the detector or away?

is the cart moving toward the detector or away?

is the cart moving toward the detector or away?