please solve all

1. A 5 kg block sits on a 25-degree frictionless inclined plane. How long will it take the block to slide 1.0 meter down the inclined plane if it starts from rest? 2. A block {unknown mass] sits on a 42-degree frictionless inclined plane. How far will this block slide down the inclined plane in 1.5 seconds? 3. A 2 kg block is shoved up a 30 degree frictionless inclined plane at 3.5 m/s. a. How far up the block will it slide before it turns around? b. How long will it take for it to return to its starting position